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	<title>megabyte &amp;laquo; WordPress.com Tag Feed</title>
	<link>http://en.wordpress.com/tag/megabyte/</link>
	<description>Feed of posts on WordPress.com tagged "megabyte"</description>
	<pubDate>Sun, 29 Nov 2009 21:43:16 +0000</pubDate>

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<item>
<title><![CDATA[MEMAHAMI SATUAN DALAM DUNIA COMPUTER ]]></title>
<link>http://suyitno01.wordpress.com/2009/11/18/memahami-satuan-dalam-dunia-computer/</link>
<pubDate>Wed, 18 Nov 2009 07:47:55 +0000</pubDate>
<dc:creator>Suyitno</dc:creator>
<guid>http://suyitno01.wordpress.com/2009/11/18/memahami-satuan-dalam-dunia-computer/</guid>
<description><![CDATA[Bit Singkatan dari binary digit (angka biner)- merupakan satuandata terkecil. Nilainya cuma 1 dan 0 ]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p><a href="http://www.speedtest.net"><img src="http://www.speedtest.net/result/587698767.png"/></a></p>
<p>Bit</p>
<p>Singkatan dari binary digit (angka biner)- merupakan satuandata terkecil. Nilainya cuma 1 dan 0 walau kelihatannya sederhana, tapi dua angka inilah yang mengalir terus didalam PC, berputar dari processor, Motherboard, chip memory sampai ke perangkat-perangkat penyimpanan data dan output lainnya atau sebaliknya. Bit mengalir sebagai sinyal-sinyal listrik. Ibarat saklar, angka nol berarti off sedangkan angka 1 artinya on. Begitulah, rangkaian data yang jumlahnya miliaran bahkan triliunan bit mengalir bagai orang menekan tombol on/off secara berulang-ulang dan cepat. Akan tetapi, bit punya wujud fisik juga. Pada sebuah CD contohnya, bit tampak sebagai bintik-bintik yang amat kecil pada permukaan disk. Sinar laser CD-ROM drive memungkinkan membaca dan mengubahnya menjadi sinyal listrik yang komputer. Bit biasanya tidak pernah berdiri sendiri. Maknanya baru muncul begitu terdiri dari sejumlah bit. Dalam perhitungan biner ada sejumlah komputer yang dipakai, yaitu sistem 8 bit, 16 bit, 32 bit, 64 bit dan seterusnya. Dengan sistem itulah komputer membaca, menerjemahkan kembali dan mengolah data angka, huruf, gambar dan sebagainya. Beruntunglah, kita tidak perlu mengetahui semua perhitungan itu untuk menggunakan komputer. Tinggal klak-klik atau ketak-ketik saja. Walau begitu, pemahaman mengenai bit akan sangat berguna untuk memahami berbagai aspek lain dalam komputer.</p>
<p>Byte</p>
<p>Terbentuk dari delapan bit. Sebuah byte merupakan kumpulan bit terkecil yang dapat dimengerti komputer. Sebuah byte mewakili angka desimal dari 0 sampai 255. Byte juga digunakan untuk mewakili huruf-huruf, angka-angka, simbol-simbol lain dalam bentuk ASCII (American Standart Code for Information). Sebagai contoh, bila Anda mengetik huruf A pada keyboard, komputer merekamnya sebagai kode ASCII 65 dan menerjemahkannya dalam perhitungan biner sebagai 01000001 – yang merupakan 1 byte. Data.</p>
<p>Kilobyte</p>
<p>Satu kilobyte data bejumlah begitu bermakna. Sama saja seperti halnya kita mengetik sebuah huruf dalam notepad. Tak ada artinya. Dokumen biasanya tersimpan dalam komputer dengan ukuran kilobyte (KB). Satuan kilo biasanya berarti seribu, tapi satu kilobyte tidak sama dengan 1.000 byte, Komputer kan bekerja dengan sistem biner, maka satu kilobyte sebenarnya sama dengan 1.024 byte. Walau begitu, untuk mudahnya, Anda boleh memperkirakan satu kilobyte sama dengan 1.000 karakter (termasuk spasi). Tulisan ini, misalnya, terdiri dari sekitar 12.000 karakter. Jadi, besarnya dalam komputer sekitar 12 KB.</p>
<p>Megabyte</p>
<p>Diatas kilobyte, kita menemukan satuan megabyte (MB). Orang biasanya menyebutkan “satu mega” saja. satu MB sama dengan 1.024 kilobyte. Dan itu artinya 1 MB sama dengan 1.048.576 byte, bukan sejuta byte. Memory komputer pada umumnya diukur dengan satuan ini. Misalnya, 64 MB, 128 MB, 256 MB, 512 MB dan seterusnya.</p>
<p>Gigabyte</p>
<p>Ukuran penyimpana data di komputer kini tidak lagi menggunakan satuan megabyte. Coba saja periksa harddisak yang ada di pasaran saat ini. Semua sudah menggunakan satuan gigabyte (GB). satuan gigabyte sama dengan 1.024 MB. Diatas satuan ini ada lagi satuan terrabyte (TB) yang sama dengan 1.024 GB. Kapasitas Harddisk diukur dengan GB.</p>
<p>Kilobit</p>
<p>Satuan ini tidaklah sama denga satuan kilobyte. Kilobit (Kb) merupakan satuan ukuran kecepatan transfer data komputer. Satu kilobit sama dengan 1000 bit. Sebuah modem, contohnya, menawarkan kecepatan download maksimum 56 Kb/s. Itu artinya modem tersebut mampu mengantarkan 56 kilobit (56.000 bit) data melalui jalur telephone dalam setiap detiknya. Ambil kalkulator dan coba hitung, kecepatan tersebut sama dengan 6.9 KB/s (kilobyte per second).</p>
<p>Megabit</p>
<p>Dalam jaringan komputer yang besar, kecepatan transfer datanya bisa mencapai satuan ukuran yang lebih besar, yaitu megabit (Mb). Kabel yang digunakan dalam jaringan komputer dikantor contohnya, dapat mengirim dan menerima data sampai 100 Mb/s atau sama dengan seratus juta bit setiap detiknya. Coba lakukan perhitungan kembali. Bahwa kecepatan transfer setinggi itu (100 Mb/s) sama dengan kecepatan 11,9 MB perdetik.</p>
<p>Hertz (Hz)</p>
<p>Hertz sebenarnya adalah nama keluarga dari Heinrich Rudolf, ahli fisika Jerman yang menemukan satuan pengukuran frekuensi radio dan listrik. Begitulah asal satuan Hertz. Satu Hertz (1 Hz) berarti satu putaran gelombang radio per detik. Di dunia komputer, satuan ini juga banyak digunakan. Pada monitor-monitor CRT misalnya, satuan Hz sebenarnya menggambarkan kemampuan me-refresh layar setiap detiknya. Monitor yang menawarkan refresh rate 85 Hz mampu me-refresh gambar pada layar sebanyak 85 kali setiap detik. Hal ini membuat tampilannya terlihat halus dan tidak berkedip.</p>
<p>Megahertz (MHz)</p>
<p>Satu Megahertz berarti satu juta putaran tiap detik. Memang belum ada monitor yang bisa mencapai kecepatan seperti ini, namun lain halnya dengan processor komputer. Kecepatan 1 MHz bagi processor akan terasa amat sangat lambat. Kecepatan processor diukur berdasarkan kemampuannya melakukan kalkulasi dalam sedetik. Pada generasi PC pertama, kecepatan processornya masih menggunakan kecepatan MHz, yaitu 4,77 MHz</p>
<p>Bandingkan dengan rata-rata PC Pentium 4 yang sudah memiliki kecepatan 3,2 GHz atau 3,2 milyar kalkulasi per detik. Tapi janganlah hanya melihat satuan ini untuk melihat kecepatan processor yang sesungguhnya. Sering beberapa processor yang memiliki satuan kecepatan yang lebih rendah dapat mengerjakan perhitungan yang sama dengan lebih cepat, ketimbang processor yang kecepatannya tinggi. Produsen processor memiliki trik-trik tersendiri untuk membuat processornya memiliki performa yang baik, tidak hanya dengan adu kecepatan.</p>
<p>Gigahertz (GHz)</p>
<p>Ada dua bidang di dunia komputer yang menggunakan satuan GHz, yaitu processor dan jaringan nirkabel. Untuk processor, barusan Anda sudah tahu gambarannya kan? Nah dalam jaringan nirkabel, istilah ini biasa dipakai untuk menentukan tingkat spektrum radio yang digunakan. Bluetooth misalnya, menggunakan frekuensi 2,4 GHz. Sedangkan Wi-Fi memakai frekuensi 2,4 GHz sampai 5GHz.</p>
<p>Kecepatan CD-RW Drive</p>
<p>Angka-angka yang tercantum dalam CD-RW drive sering membingungkan orang. Apa sih arti 2x, 4x, 8x, 16x, 24x, 32x dan seterusnya? Patokannya sebenarnya gampang saja. Kalikan saja angka perkalian tersebut dengan angka 150 KB per detik. Nilai itu merupakan kecepatan drive yang pertama kali Cek dengan kalkulator Anda. CD-RW drive berkecepatan 2x mampu menulis dengan kecepatan 300 KB per detik, sedangkan drive dengan kecepatan 52x mampu menulis hingga 7.800 KB/detik. Tapi angka perkalian pada CD-RW drive tidak hanya satu, ada tiga angka, rumusnya: Kecepatan baca x kecepatan tulis (CD-R) x kecepatan rewrite (CD-RW) x. CD-RW drive dengan kecepatan 48 x 32 x 16 misalnya, mampu membaca dengan kecepatan 48x, menulis dengan kecepatan 32x, dan memiliki kemampuan rewrite 16x.</p>
<p>Kecepatan DVD Drive</p>
<p>DVD-RW drive memang lebih cepat. Angka dasar untuk mengetahui tingkat kecepatan DVD drive adalah 1.358 KB per detik. Jadi, kalikan saja kecepatan DVD dengan angka tersebut. Drive yang beredar di pasaran kebanyakan berkecepatan 16x. Artinya, berkecepatan sekitar 22.160 KB per detik. Sayangnya, aturan di pasar DVD-RW drive memang tidak sejelas CD-RW drive. Anda tidak dapat melihat potensial untuk membaca, menulis, dan rewrite hanya dengan sekilas. Yang juga membingungkan, sebagian besar DVD drive juga dapat merekam CD-R dan CD-RW. Beberapa model terbaru malah dapat merekam ke berbagai standar DVD. Walau begitu, kalau Anda telaten membaca keterangan didalamnya, info seperti itu mestinya tersedia.</p>
<p>Kecepatan Harddisk (rpm)</p>
<p>Singkatan rpm (revolution per minute) pada harddisk menentukan kecepatan putar pelat magnetiknya. Semakin tinggi nilai rpm, semakin cepat pula putaran pelat disk. Hal ini berpengaruh pada nilai transfer data. Dengan kata lain, seberapa cepat data dapat dibaca dan ditulis pada disk tersebut. Biasanya, sebuah harddisk PC berputar pada kecepatan 5.400 rpm, dan tingkat kecepatan ini sebenarnya lebih dari cukup. Walau begitu, Anda bisa juga membeli harddisk dengan kecepatan 7.200 rpm. Peningkatan kecepatan ini memang memberikan sedikit peningkatan kinerja. Kalau mau, Anda juga bisa membeli model 10.000 rpm, tetapi harganya memang relatif mahal.</p>
<p>Kecepatan Printer (ppm)</p>
<p>Para vendor printer biasanya menawarkan kecepatan pencetakan printernya. Satuan yang biasa dipakai untuk menggambarkan hal itu adalah paper per minute alias ppm. Gampangnya, semakin besar nilai ppm, maka semakin cepatlah printer tersebut. Ppm sendiri sebenarnya hanya efektif untuk menggambarkan kecepatan text. Begitu ada unsur gambar atau grafik dalam dokumen, kecepatannya biasanya langsung turun. Apalagi bila kita mencetak foto pada printer inkjet, nilai ppm benar-benar tidak bisa diharapkan. Sebaliknya, kecepatan cetak foto biasanya diukur dalam hitungan menit. Apapun printernya, kecepatan pencetakan sebenarnya juga berhubungan dengan kecepatan komputer itu sendiri.</p>
<p>Frame per detik (fps)</p>
<p>Apa yang penting kita perhatikan dari spesifikasi sebuah kartu grafis? Lihatlah nilai frames per second (fps) yang ditawarkannya. Makin tinggi fps atau frame-ratenya, maka semakin haluslah gerakan pada layar. Dalam sebuah game, kemampuan frame-rate kartu grafis menjadi sangat penting, mengingat game memang merupakan gambar yang terus bergerak. Kalau gamenya sederhana sih, kartu grafis dengan fps yang biasa saja tidak akan menjadi masalah. Tapi cobalah mainkan game 3D, kartu grafis dengan fps yang tinggi akan menunjukkan keunggulannya. Saat memainkan video, nilai fps juga sangat menentukan tingkat kehalusan tampian video. Kartu grafis dengan nilai fps rendah bisa membuat tampilan video terlihat patah-patah. Begini saja, kuncinya carilah kartu grafis dengan nilai fps dia atas 30 fps. Kalau bisa, carilah dengan nilai yang paling tinggi, apalagi Anda doyan main game 3D.</p>
<p>Dot per inch (dpi)</p>
<p>Kualitas hasil cetak printer dan kemampuan scaner dalam menangkap gambar biasa ditunjukan dengan nilai dot per inch (dpi). Nilai ini menunjukkan seberapa banyak titik pada satu inch persegi. Tapi kenyataannya istilah ini seolah-olah kehilangan arti pentingnya. Kemampuan sebuah printer untuk menghasilkan begitu banyak titik pada setiap inch sebenarnya bukan patokan kualitas hasil cetak. Ragam tinta, ukuran droplet (titik tinta), teknik semprot, serta kualitas kertas berkonstribusi langsung pada tampilan akhirnya. Begitu pula halnya dengan scaner. Sebuah scaner dengan resolusi 9.600 dpi contohnya, mungkin hanya bisa menangkap informasi gambar sekitar 600 dpi saja. Waspadai, tingginya nilai dpi bisa jadi merupakan hasil interpolasi digital dan bukan karena kemampuan sebenarnya.</p>
<p>Pixel</p>
<p>Pixel merupakan kependekan dari picture element. Satuan ini banyak digunakan pada monitor, baik LCD maupun CRT. Gambar-gambar yang Anda lihat pada monitor kenyataannya terbuat dari ribuan (bahkan jutaan) titik kecil yang berwarna, itulah yang dinamakan pixel. Hal ini biasa ditentukan oleh resolusi kartu grafisnya. Kartu grafis yang dapat menghasilkan resolusi layar 1.600 x 1.200 pixel, contohnya, akan menghasilkan 1.920.000 pixel. Resolusi sebesar itu terbilang cukup rapat dan halus. Resolusi layar monitor CRT biasanya lebih fleksibel, sementara monitor TFT lebih terbatas.</p>
<p>Ukuran point</p>
<p>Point atau pt menunjukkan ukuran cetak suatu jenis font. Dalam pencetakan modern, tinggi satu point biasanya sama dengan 1/72 inch (0.0138 inch atau 0.35 mm). Karena itu, font dengan ukuran itu sudah termasuk ruang untuk tipe huruf yang menjulur keatas (seperti ‘f’), ke bawah (seperti ‘p’).</p>
<p>Megapixel</p>
<p>Istilah megapixel sering dipakai dalam kamera digital. Satu megapixel sama dengan satu juta pixel, menunjukkan kemampuan kamera dalam menangkap detil obyek yang difoto. Asumsinya, sebuah kamera dengan kemampuan dua megapixel akan menangkap gambar yang lebih detil ketimbang kamera digital satu megapixel. Tetapi, resolusi sebenarnya hanya salah satu faktor yang mempengaruhi kamera digital. Kualitas yang sebenarnya juga sangat penting adalah kemampuan lensanya itu sendiri. Tapi hati-hati mencerna spesifikasi kamera digital. Klim dua megapixel misalnya, bisa saja sebenarnya hanya mampu mengambil resolusi sampai 1.600 x 1.200 pixel, yang artinya sama dengan 80.000 pixel. Jauh betul dari angka yang digembar-gemborkannya kan? Faktor penyebabnya bisa bermacam-macam. Yang jelas, ada juga yang secara jujur mengungkapkan bahwa angka itu merupakan hasil interpolasi atau pengatrolan warna belaka.</p>
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<title><![CDATA[Chefredakteur des Wired Magazine hält Vortrag zu Freemium Business Modellen ]]></title>
<link>http://dotproperty.wordpress.com/2009/11/09/chefredakteur-des-wired-magazine-halt-vortrag-zu-freemium-business-modellen/</link>
<pubDate>Mon, 09 Nov 2009 16:25:18 +0000</pubDate>
<dc:creator>dotproperty</dc:creator>
<guid>http://dotproperty.wordpress.com/2009/11/09/chefredakteur-des-wired-magazine-halt-vortrag-zu-freemium-business-modellen/</guid>
<description><![CDATA[Der Chefredakteur des Wired Magazine, Chris Anderson, hielt an der Startup School kürzlich einen Vor]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p style="text-align:justify;"><img class="alignnone size-thumbnail wp-image-243" title="wired" src="http://dotproperty.wordpress.com/files/2009/11/wired.png?w=150" alt="wired" width="150" height="41" /></p>
<p style="text-align:justify;">Der Chefredakteur des <a href="http://www.wired.com/">Wired Magazine</a>, Chris Anderson, hielt an der <a href="http://startupschool.org/">Startup School</a> kürzlich einen Vortrag über Freemium Business Modelle. Freemium ist ein Geschäftsmodell, bei dem Basisdienste gratis angeboten werden und für weitere Dienste ein Preis verlangt wird. Anderson verglich Freemium mit dem Vergeben von Muffins auf der Straße, um Menschen dazu zu bringen Muffins zu essen. Mit der Vergabe von Muffins sei jedoch ein erheblicher Kostenaufwand verbunden. Bei digitalen Waren, könne man 90 Prozent des Produkts umsonst anbieten, ohne dass dabei Kosten für diese Waren entstehen.</p>
<p style="text-align:justify;">Laut Anderson ist es in Ordnung, dass die Minderheit der zahlenden Nutzer (paid users)  für die Mehrheit zahle, weil die freien Nutzer (free users) die Produkte weiterempfehlen. Allein die Weiterempfehlung ist eine bedeutende Marketingchance. „Paid user“ sind häufig sehr gute Kunden, sie werden das Produkt größtenteils unabhängig vom Preis nutzen.</p>
<p style="text-align:justify;"><!--more--></p>
<p style="text-align:justify;">Das <em>Wired Magazine</em> wird in verschiedenen Formen verkauft: am Kiosk, als Abonnement und in digitaler Form online. Es gibt eine Preissegmentierung, die darauf aufbaut: Viele Ausgaben werden zum Nulltarif verteilt. Die Papierausgabe ist das Premium. 90.000 Kunden für die Kiosk Ausgabe, 800.000 Kunden für 1 Dollar pro Monatsabonnement.</p>
<p style="text-align:justify;">Anderson stellte seine Vorstellung am Beispiel des populären, kostenlosen Spiels <a href="http://www.clubpenguin.com/">Club Penguin</a> vor. Eltern wollen demnach nicht für Spiele aus dem Fernsehen mit der Kreditkarte bezahlen. Bei Club Penguin aber sehen sie, dass ihr Kind ein Iglo gebaut hat und Freunde hat. Gegen Bezahlung kann das Kind in das Iglo einziehen etc. Es ist einfacher auf diese Weise, die Eltern zur Zahlung mit der Kreditkarte zu bewegen, als wenn das Kind ein Spiel haben will, das es kurz zuvor in der Fernsehwerbung gesehen hat.</p>
<p style="text-align:justify;">Wofür werden Menschen zahlen? Sie zahlen für Zeitersparnis. Junge Menschen haben mehr Zeit als Geld. Ältere Menschen haben mehr Geld als Zeit. Anderson erläuterte unterschiedliche Strategien für Freemium Modelle:</p>
<p style="text-align:justify;"><strong>Limitierte (begrenzte) Features</strong></p>
<p style="text-align:justify;">Geben Sie dem User anfangs wirkliche Nutzungsfunktionen. Aber geben Sie im anschließend die Möglichkeit mehr Anwendungen zu nutzen, wenn er dafür bezahlt. Dazu müssen Sie zusätzliche Produkte und Anwendungen neben dem Basispaket anbieten.</p>
<p style="text-align:justify;"><strong>Zeitlimitierung </strong></p>
<p style="text-align:justify;">Einfach anzuwenden, aber es gibt weniger Entschlossenheit und Engagement auf der Kundenseite.</p>
<p style="text-align:justify;"><strong>Kapazitäten begrenzen</strong><br />
Leicht zu machen (z. B. die Anzahl von Megabytes in einer E-Mail-Box), aber es funktioniert nicht immer für alle Produkte.</p>
<p style="text-align:justify;"><strong>Teilnehmerbegrenzung </strong></p>
<p style="text-align:justify;">Eine Teilnehmerbegrenzung ist leicht zu integrieren. Jedoch funktioniert diese Begrenzung nicht für jedes Produkt und Teilnehmer können „tricksen“, indem sie Zugänge in Teams von mehreren Personen nutzen.</p>
<p style="text-align:justify;"><strong>Kundenklassenlimitierung </strong></p>
<p style="text-align:justify;">Sie können ebenfalls eine Kundenklassenlimitierung einführen. <a href="http://www.microsoft.com/BizSpark/">Bizspark</a> von Microsoft ist zum Beispiel kostenlos für Unternehmen, die jünger als 3 Jahre alt sind und deren Einkommen unter 1 Million liegt.</p>
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<title><![CDATA[Product Review: Personalized Pexagon Thumbdrive]]></title>
<link>http://picture-soup.com/2009/11/01/product-review-personalized-pexagon-thumbdrive/</link>
<pubDate>Mon, 02 Nov 2009 00:14:15 +0000</pubDate>
<dc:creator>PictureSoup</dc:creator>
<guid>http://picture-soup.com/2009/11/01/product-review-personalized-pexagon-thumbdrive/</guid>
<description><![CDATA[By Diane Berkenfeld &nbsp; My new pink 4GB Pexagon USB thumbdrive sits atop the box it was delivered]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><h3>By Diane Berkenfeld
<p>&#160;</p>
<p><div id="attachment_682" class="wp-caption alignright" style="width: 310px"><img class="size-medium wp-image-682  " title="pexagon USB drive" src="http://picturesoup.wordpress.com/files/2009/11/pexagon-usb-drive.jpg?w=300" alt="pexagon USB drive" width="300" height="149" /><p class="wp-caption-text">My new pink 4GB Pexagon USB thumbdrive sits atop the box it was delivered in.</p></div></h3>
<p>Pexagon Technology has been in the digital media business for some time. I stopped by their booth at the recent PhotoPlus Expo tradeshow and saw a great range of products that are ideal for the photographer or studio who needs to deliver digital files and keep their branding at the top of mind with their customers. Pexagon offers a wide range of digital media storage—USB drives in numerous styles and capacities—as well as Store-It drives. The unique thing about Pexagon is that they offer personalization of the USB drives and portable Store-It drives. And they offer bulk pricing.</p>
<p>The USB drives that can be personalized include swivel and traditional style USB drives in 14 different colors, and with capacities ranging from 128MB to 16GB. The portable Store-It and Store-It Pro 2.5-inch hard drives also come in 14 different colors and in capacities up to 500GB. They are Mac and PC compatible and connect to computer via USB 2.0. The Store-It and Store-It Pro drives are bus powered, meaning that they receive power by the computer via USB.</p>
<p>Instead of burning the images you’re delivering to clients on a CD or DVD that will likely be taken out once to download the files and then stored, never to see the light of day again—deliver the files on a USB drive that can be used and reused over and over. The USB drive is something that anyone can utilize and more importantly, it keeps your brand name in front of them. As a photographer, being able to deliver files in a reusable media format that is branded with your business name is to me, a much better solution than using media that is branded with the manufacturer’s logo or name.</p>
<p>Choose the capacity you need, whether its delivering low-res proofs on a 128MB drive or a complete job of final high-res image files on an 8 or 16GB drive.</p>
<p>Pexagon can personalize the swivel and traditional USB drives with two lines of copy on one side and a logo on the other. The Store-It drives can also be personalized with logo and copy. The personalization is crisp and easy to read. And, because it is laser engraved, it will last. Better still, there’s no set-up charges for the personalization.</p>
<p>The company also offers other personalized items as well as various styles and colors of USB drives, including those that take the shape of animals, wood covered drives, USB Jellibandz (wristbands that feature a USB drive in the closure, Jellibeenz (diminutive USB drives), business card USB drives, and more. They also offer a USB drive that is incorporated into a lanyard, making it perfect for staffers or students to keep their media close at hand.</p>
<p>I’ve used both the Pexagon USB media drives and Store-It drives for years, and have never had any issues. They&#8217;ve always worked perfectly. The pink 4GB personalized USB drive I just received from Pexagon came in a nice sturdy cardboard box, with an accessory lanyard. The colors that the company offers are really nice shades—very trendy, and they have the look and feel of high quality products. And, delivery was pretty quick after it was ordered.</p>
<p>The company has a dedicated Photo Solutions salesperson, as well as salespeople dedicated to other vertical markets which I think is smart, as they’ll understand the concerns and needs of their customers better. For more information, go to the website at <a href="http://www.pexagontech.com/" target="_blank">www.pexagontech.com</a>.</p>
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<title><![CDATA[Equivalencia de unidades]]></title>
<link>http://ermelindamaglione.wordpress.com/2009/10/26/equivalencia-de-unidades/</link>
<pubDate>Mon, 26 Oct 2009 00:19:48 +0000</pubDate>
<dc:creator>ermelindamaglione</dc:creator>
<guid>http://ermelindamaglione.wordpress.com/2009/10/26/equivalencia-de-unidades/</guid>
<description><![CDATA[Descargar presentación: Equivalencia de Unidades]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture1.jpg"><img class="alignnone size-medium wp-image-8" title="Picture1" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture1.jpg?w=300" alt="Picture1" width="300" height="225" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture2.png"><img class="alignnone size-medium wp-image-9" title="Picture2" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture2.png?w=300" alt="Picture2" width="300" height="225" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture3.png"><img class="alignnone size-medium wp-image-10" title="Picture3" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture3.png?w=300" alt="Picture3" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture4.png"><img class="alignnone size-medium wp-image-11" title="Picture4" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture4.png?w=300" alt="Picture4" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture5.png"><img class="alignnone size-medium wp-image-12" title="Picture5" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture5.png?w=300" alt="Picture5" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture6.png"><img class="alignnone size-medium wp-image-13" title="Picture6" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture6.png?w=300" alt="Picture6" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture7.png"><img class="alignnone size-medium wp-image-14" title="Picture7" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture7.png?w=300" alt="Picture7" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture8.png"><img class="alignnone size-medium wp-image-15" title="Picture8" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture8.png?w=300" alt="Picture8" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture9.png"><img class="alignnone size-medium wp-image-16" title="Picture9" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture9.png?w=300" alt="Picture9" width="300" height="225" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture10.png"><img class="alignnone size-medium wp-image-17" title="Picture10" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture10.png?w=300" alt="Picture10" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture11.png"><img class="alignnone size-medium wp-image-18" title="Picture11" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture11.png?w=300" alt="Picture11" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture12.png"><img class="alignnone size-medium wp-image-19" title="Picture12" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture12.png?w=300" alt="Picture12" width="300" height="224" /></a></p>
<p><a href="http://ermelindamaglione.wordpress.com/files/2009/10/picture13.png"><img class="alignnone size-medium wp-image-20" title="Picture13" src="http://ermelindamaglione.wordpress.com/files/2009/10/picture13.png?w=300" alt="Picture13" width="300" height="224" /></a></p>
<p>Descargar presentación: <a href="http://ermelindamaglione.wordpress.com/files/2009/10/equivalenciadeunidades.ppt">Equivalencia de Unidades</a></p>
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<title><![CDATA[ReBoot Rebooted: New Movie in 2010]]></title>
<link>http://blog.cmdstore.com/2009/10/21/reboot-rebooted-new-movie-in-2010/</link>
<pubDate>Wed, 21 Oct 2009 20:06:49 +0000</pubDate>
<dc:creator>actionfigurecanada</dc:creator>
<guid>http://blog.cmdstore.com/2009/10/21/reboot-rebooted-new-movie-in-2010/</guid>
<description><![CDATA[At the 2008 New York Comic Con, I was fortunate to come upon a surprisingly understated booth manned]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>At the 2008 New York Comic Con, I was fortunate to come upon a surprisingly understated booth manned by the co-creator of Reboot, Gavin Blair. All too happy to talk to us despite the insane degree of fangirling we were doing (I can&#8217;t help it that I loved Megabyte), he told us about the future of Reboot and the fact that it wasn&#8217;t over despite having ended on a cliffhanger and lost Megabyte&#8217;s incredible voice talent, Tony Jay, who passed away in August 2006.</p>
<p>I was more than excited to read more about these developments over at the <a href="http://www.reboot.com/">Official Reboot Fansite</a> and followed the comics and the news closely. And as much as it helped to fill the Reboot-shaped hole in my heart, I was never truly satisfied.</p>
<p>Until now.</p>
<p><a href="http://www.rainmaker.com/">Rainmaker Studios</a> has announced that 2010 will see the release of a brand new Reboot film!  They had this to say about the movie:</p>
<p><em> Season 4 of ReBoot ended on a famous cliffhanger. While some aspects of that cliffhanger were resolved in a three-part web comic series, the theatrical feature film will be a departure from the series in this regard. It is our intention to create a new ReBoot adventure that seasoned fans will enjoy exploring while simultaneously introducing the rich world of Mainframe to a whole new audience.</em></p>
<p>Now here&#8217;s a look at the teaser&#8230;</p>
<p><span style='text-align:center; display: block;'><object width='425' height='350'><param name='movie' value='http://www.youtube.com/v/zscrv7OJ3TU&#038;rel=1&#038;fs=1&#038;showsearch=0&#038;hd=0' /><param name='allowfullscreen' value='true' /><param name='wmode' value='transparent' /><embed src='http://www.youtube.com/v/zscrv7OJ3TU&#038;rel=1&#038;fs=1&#038;showsearch=0&#038;hd=0' type='application/x-shockwave-flash' allowfullscreen='true' width='425' height='350' wmode='transparent'></embed></object></span></p>
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<title><![CDATA[Self Imposed Crash]]></title>
<link>http://monrovian21.wordpress.com/2009/10/17/self-imposed-crash/</link>
<pubDate>Sat, 17 Oct 2009 19:03:12 +0000</pubDate>
<dc:creator>monrovian21</dc:creator>
<guid>http://monrovian21.wordpress.com/2009/10/17/self-imposed-crash/</guid>
<description><![CDATA[The message was ominous, Immediate Attention Required! Approaching Storage Quota Limit! said my e-ma]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>The message was ominous, Immediate Attention Required! Approaching Storage Quota Limit! said my e-mail service.</p>
<p>At first I thought it was a Spam attack. I&#8217;ve been hit before as hundreds of messages streamed into my In Box and were then filtered to my Spam Folder. When this happens, I find it fun to watch the number count grow in dark black as dozen after dozen of notes pour in offering me the latest cure for baldness, obesity, lack of energy, too much energy and/or male enhancement. Then, after the attack is done I&#8217;ll finally receive the similar ominous message warning me that I&#8217;ve received too much e-mail and I need to do some cleaning.</p>
<p>This time was different, the warning didn&#8217;t come from illicit pranksters in some far off country fishing for my credit card number or an alleged &#8220;hottie who thinks I&#8217;m cute and wants to meet.&#8221;</p>
<p>Instead, the overflow of data came from fellow REALTORS who had been instructed to e-mail offers to my address for an aggressively priced home our company has for sale.</p>
<p>The problem wasn&#8217;t the number of offers being received but with the size of the files. In some cases, I received e-mail attachment of 14 Megabytes (MB) or higher. It almost seemed as if agents had scanned contracts page by page (our average offer is 20 pages) in high resolution and sent them to me.</p>
<p>This, compounded by the myriad of offers received and my usual busy e-mail traffic caused the flashing lights, the dire warnings and a frustrated agent.</p>
<p>Now, without getting too technical let me explain the file size problem. A 20 page document (if scanned correctly) should average about 2 MB. This, I&#8217;ve found, is the optimum file size that most computers and e-mail systems can handle. Some will argue that modern e-mail systems can digest much larger file sizes without a care. But seeing as I deal with countless documents streaming to through the internet, I have found that nimble file sizes tend to work best in our industry.</p>
<p>Warning: Science and Data Content (For the Geek in You)</p>
<p>Wikipedia describes a byte as: A byte (pronounced) is a unit of information storage representing the smallest addressable element for a given computer architecture</p>
<p>A Megabye in turn is defined as: a SI-multiple of the unit byte for digital information storage or transmission and is equal to 106 (1000000) bytes.</p>
<p>10 to the 6th power? That&#8217;s a lot of 1 and 0s!</p>
<p>I&#8217;m sure the technophiles will challenge my rudimentary descriptions here.</p>
<p>My point is that when agents send offers via e-mail please be mindful of the file size that you&#8217;re sending. If you&#8217;re sending anything over 2.5 MB you may want to forewarn the recipient that you&#8217;re trying to squeeze a watermelon through a keyhole.</p>
<p>Now about that &#8220;hottie&#8221;&#8230;&#8230;</p>
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<title><![CDATA[Thugfucker - Seratonin Remixes - Mood-076 clips]]></title>
<link>http://beatbird.wordpress.com/2009/10/11/thugfucker-seratonin-remixes-mood-076-clips/</link>
<pubDate>Sun, 11 Oct 2009 19:47:36 +0000</pubDate>
<dc:creator>DigitalEGO</dc:creator>
<guid>http://beatbird.wordpress.com/2009/10/11/thugfucker-seratonin-remixes-mood-076-clips/</guid>
<description><![CDATA[]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><object height="81" width="100%"><param name="movie" value="http://player.soundcloud.com/player.swf?url=http%3A%2F%2Fsoundcloud.com%2Fsasse%2Fthugfucker-seratonin-remixes-mood-077-clips&amp;g=1&amp;show_comments=true&amp;auto_play=false&amp;color=336666"></param><param name="allowscriptaccess" value="always"></param><embed allowscriptaccess="always" height="81" src="http://player.soundcloud.com/player.swf?url=http%3A%2F%2Fsoundcloud.com%2Fsasse%2Fthugfucker-seratonin-remixes-mood-077-clips&amp;g=1&amp;show_comments=true&amp;auto_play=false&amp;color=336666" type="application/x-shockwave-flash" width="100%"> </embed> </object>
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<title><![CDATA[Qual'è la tua Velocità di Connessione? - di Simone L.]]></title>
<link>http://thebexperiment.wordpress.com/2009/09/26/quale-la-tua-velocita-di-connessione-di-simone-l/</link>
<pubDate>Sat, 26 Sep 2009 16:06:41 +0000</pubDate>
<dc:creator>thebexperiment</dc:creator>
<guid>http://thebexperiment.wordpress.com/2009/09/26/quale-la-tua-velocita-di-connessione-di-simone-l/</guid>
<description><![CDATA[Sicuramente molti di noi si chiedono spesso quale sia la loro effettiva velocita&#8217; di connessio]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p style="text-align:center;"><a href="http://thebexperiment.wordpress.com/2009/09/26/quale-la-tua-velocita-di-connessione-di-simone-l/" target="_blank"><img class="aligncenter" style="margin-top:30px;margin-bottom:30px;" src="http://1.bp.blogspot.com/_KLwhACUsKS4/Slb4V-gxI8I/AAAAAAAABQ8/KY_6CK-l1tI/s400/misurare+la+velocit%C3%A0+adsl.jpg" alt="" width="400" height="244" /></a></p>
<p>Sicuramente molti di noi si chiedono spesso quale sia la loro effettiva <strong>velocita&#8217;</strong> di connessione  ad Internet.</p>
<p>Spesso capita di sentirci dire frasi del tipo: &#8221; Ho una connessione a <strong>4 mega</strong> &#8221; o  &#8221; La mia  velocita&#8217; e&#8217; di <strong>10 Mbps</strong> &#8220;, ecc.  Ma in <strong>realta&#8217;</strong>, qual&#8217;e&#8217; la velocita&#8217; <strong>oggettiva </strong>?</p>
<h2><!--more LEGGI...--></h2>
<p>Un discorso al quale molti non fanno caso, e&#8217; la <strong>differenza</strong> tra Mb e Mbps. Si dà per  scontato che 1 Mpbs significhi 1 Megabyte per secondo, ma non e&#8217; cosi&#8217;.  1 Megabyte equivale ad 8 Megabits!  Mbps sta appunto per<strong> Megabits</strong> per secondo.</p>
<p>Dunque se la compagnia telefonica con cui stipuliamo un contratto per il servizio Internet ci dice che la velocita&#8217; e&#8217; ad esempio 20 Mbps, <strong>STATE ATTENTI!!!</strong></p>
<p>20 Mbps non sono 20 Megabyte per secondo ma <strong>Megabits</strong> per secondo.  Dunque se avessimo una connessione ipotetica di 10 Mbps, per capire quale sara&#8217; la velocita&#8217; in Megabytes per secondo (Mb/s) dovremo fare una veloce <strong>divisione</strong>:</p>
<p>10mbps : 8 = 1.25 Mb .</p>
<p>Questa sara&#8217; la velocita&#8217; che la compagnia <strong>dichiara</strong> di offrirci per i  downloads, gli uploads  in  genere sono molto piu&#8217; <strong>bassi</strong>.</p>
<p>Eccovi 2 siti <strong>utili</strong>.</p>
<p>Il primo permette di <strong>confrontare</strong> le varie offerte di connessione ADSL  disponibili in Italia attualmente. Il secondo serve invece a effettuare un <strong>test</strong> di velocita&#8217; sulla vostra connessione.  Devo dire che quest ultimo e&#8217; molto <strong>affidabile</strong> (a mio parere, ovviamente).</p>
<p>Considerate che ci sara&#8217;  sempre un <strong>margine</strong> di errore, che dipende dal server che scegliete per fare il test ma il risultato e&#8217; soddisfacente. Provatelo!</p>
<ol>
<li><a href="http://www.migliori-offerte-adsl.it/confronto-tariffe/ultime-tariffe-adsl?q=offerte+adsl&#38;source=google&#38;cst=fs&#38;csc=3278041591&#38;csk=adsl%20confronto" target="_blank">http://www.migliori-offerte-adsl.it/confronto-tariffe/ultime-tariffe-adsl?q=offerte+adsl&#38;source=google&#38;cst=fs&#38;csc=3278041591&#38;csk=adsl%20confronto </a></li>
<li><a href="http://www.speedtest.net" target="_blank">http://www.speedtest.net</a></li>
</ol>
<p><img class="alignnone" style="margin-top:50px;margin-bottom:50px;" src="http://www.speedtest.net/result/574427971.png" alt="" width="300" height="135" /></p>
<p><a href="http://www.speedtest.net http://www.speedtest.net/result/574427971.png" target="_blank"> </a>(risultato di un mio test, come potete notare, la mia connessione e&#8217; parecchio lenta <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  )</p>
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<title><![CDATA[La capacidad de los discos duros]]></title>
<link>http://eldestornillador.wordpress.com/2009/09/23/la-capacidad-de-los-discos-duros/</link>
<pubDate>Wed, 23 Sep 2009 17:49:39 +0000</pubDate>
<dc:creator>eldestornillador</dc:creator>
<guid>http://eldestornillador.wordpress.com/2009/09/23/la-capacidad-de-los-discos-duros/</guid>
<description><![CDATA[Esta mañana he tenido una curiosa charla con un cliente acerca de la capacidad de los discos duros. ]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p style="text-align:center;"><img src="http://img19.imageshack.us/img19/7489/seagatesatahd.jpg"></p>
<p></p>
<p>Esta mañana he tenido una curiosa charla con un cliente acerca de la capacidad de los discos duros.<br />
Me decía que nos iba a denunciar, en broma claro, porque un cliente suyo le había dicho que le habían estafado porque le compró un disco duro y al formatearlo le daba menos capacidad de la que era el disco.</p>
<p>Cuando se ha ido, me he quedado pensando en lo cierto que es y esto me ha llevado a la típica explicación de que las unidades en esto de la informática, en vez de ir de 1000 en 1000, van de 1024 en 1024 ¿y porqué es esto? y es más ¿cuántos gigabytes <em>pierde</em> cada disco duro?</p>
<p>La explicación es sencilla, primero las medidas por si alguien no las conoce</p>
<table align="center" width="250" border="1" cellpadding="15" cellspacing="0">
<tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">0,1 = 1 BIT</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">8 BITS = 1 BYTE</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">1024 BYTES = 1 KILOBYTE</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">1024 KILOBYTES = 1 MEGABYTE</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">1024 MEGABYTES = 1 GIGABYTE</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">1024 GIGABYTES = 1 TERABYTE</td>
</tr>
</table>
<p>Ahora la fórmula para la conversión de medidas, ya que nosotros contamos en sistema decimal y hay que contarlo en sistema binario</p>
<p>En decimal</p>
<p style="text-align:center;"><img src="http://personales.alumno.upv.es/igpemar1/imagenes/decimal.jpg"></p>
<p></p>
<p>Y ahora en binario</p>
<p style="text-align:center;"><img src="http://personales.alumno.upv.es/igpemar1/imagenes/binario.jpg"></p>
<p></p>
<p>Vale, pero después de todo este lio ¿cual es la cantidad exacta de gigas que se pierde en un disco duro?<br />
Para saberlo, hay que hacer un sencillo cálculo.<br />
Cogemos los bytes que componen un gigabyte en código decimal, los dividimos entre los bytes que componen un gigabyte en código binario, el resultado lo multiplicamos por 100 y el resultado es &#8230;</p>
<p style="text-align:center;"><img src="http://personales.alumno.upv.es/igpemar1/imagenes/division.jpg"></p>
<p></p>
<p>El <strong>93,13%</strong>, por lo que haciendo una regla de tres directa aplicada los tamaños de disco duro más convencionales nos sale esto.</p>
<table align="center" width="340" border="1" cellpadding="15" cellspacing="0">
<tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">TAMAÑO DEL DISCO</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">TAMAÑO EN GIGABYTES</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 160GB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">149GB</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 250GB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">232GB</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 320GB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">298GB</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 500GB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">465GB</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 1TB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">931GB</td>
</tr>
<td align="center" valign="middle" bgcolor="#FFFFFF">HDD 1,5TB</p>
<td align="center" valign="middle" bgcolor="#FFFFFF">1396GB</td>
</tr>
</table>
<p>Curioso ¿no?<br />
Visto en <strong><a href="http://blognota.wordpress.com/2007/04/03/%C2%BFperdida-de-capacidad-en-nuestros-discos-duros/">Blognota</a></strong>.</p>
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<title><![CDATA[rodzaje awarii dysków]]></title>
<link>http://danewarszawa.wordpress.com/2009/08/19/awarie-dyskow/</link>
<pubDate>Wed, 19 Aug 2009 20:58:02 +0000</pubDate>
<dc:creator>danewarszawa</dc:creator>
<guid>http://danewarszawa.wordpress.com/2009/08/19/awarie-dyskow/</guid>
<description><![CDATA[Murphy w jednym z swoich praw głosił, że &#8211; „jeżeli coś może się popsuć, to z pewnością się pop]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Murphy w jednym z swoich praw głosił, że &#8211; „jeżeli coś może się popsuć, to z pewnością się popsuje”, pesymistyczna wizja- jednak zważając na to iż nic nie jest wieczne musimy przyznać mu rację.</p>
<p>Odzyskiwanie danych dotyczy głównie dysków „dotkniętych” awarią, dlatego kolejny artykuł poświęcam także tej tematyce.<br />
Awarie dysku możemy podzielić na:<br />
Awarie logiczne – nie ulega uszkodzeniu tu nośnik tylko zostaje naruszona spójność struktury logicznej danych,<br />
Awarie mechaniczne – tutaj zostają uszkodzone zwykle części nośników np. talerze czy głowice, bądź elektronika. Taka awaria może nastąpić np. przy upadku dysku<br />
Ostatni typ awarii &#8211; elektroniczna – dysk jest podłączony, jednak nie został wykryty przez Bios</p>
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<title><![CDATA[Kilobyte, megabyte, gigabyte, terabyte&hellip; e depois?]]></title>
<link>http://mixmundo.wordpress.com/2009/06/29/kilobyte-megabyte-gigabyte-terabyte-e-depois/</link>
<pubDate>Mon, 29 Jun 2009 15:46:28 +0000</pubDate>
<dc:creator>Kelvim Albuquerque</dc:creator>
<guid>http://mixmundo.wordpress.com/2009/06/29/kilobyte-megabyte-gigabyte-terabyte-e-depois/</guid>
<description><![CDATA[No texto ‘Os maiores bancos de dados do mundo‘, a menção de medidas como terabyte e petabyte causou ]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>No texto ‘<a href="http://www.infowester.com/blog/?p=363">Os maiores bancos de dados do mundo</a>‘, a menção de medidas como <i>terabyte</i> e <i>petabyte</i> causou surpresa nos comentários. O motivo é simples: as pessoas mais familiarizadas com informática sabem o significado de <i>byte</i>, <i>kilobyte</i>, <i>megabyte</i> e <i>gigabyte</i>. Uma parcela um pouco menor também sabe o que é <i>terabyte</i>, mas, e o que vem depois disso? Já começou a complicar, né?</p>
<p>Para não restar dúvidas, fiz uma rápida pesquisa, e o resultado é mostrado abaixo. Por meio dessa relação é possível conhecer as medidas referentes a dados mais comuns e as mais desconhecidas. Vamos lá:</p>
<p><b>1 Byte =</b> 8 bits    <br /><b>1 Kilobyte (KB) =</b> 1024 bytes    <br /><b>1 Megabyte (MB) =</b> 1024 kilobytes    <br /><b>1 Gigabyte (GB) =</b> 1024 megabytes    <br /><b>1 Terabyte (TB) =</b> 1024 gigabytes    <br /><b>1 Petabyte (PB) =</b> 1024 terabytes    <br /><b>1 Exabyte (EB) =</b> 1024 petabytes    <br /><b>1 Zettabyte (ZB) =</b> 1024 exabytes    <br /><b>1 Yottabyte (YB) =</b> 1024 zettabytes</p>
<p>A partir de petabyte, já fica difícil compreender mentalmente o tamanho do volume dados. São valores absurdamente altos! Usando a calculadora do Google, é possível verificar, por exemplo, que 1 yottabyte&#160; corresponde a 1.20892582 × 10<sup>24</sup> bytes. Como segundo exemplo, 1 exabyte equivale a 1 bilhão de gigabytes!</p>
<p><img style="display:block;float:none;margin-left:auto;margin-right:auto;" src="http://infowester.com/blog/blog_imagens/med_g.jpg" /></p>
<p>Caso queira testar outras medidas, <a href="http://www.infowester.com/blog/kilobyte-megabyte-gigabyte-terabyte-e-depois/#">digite</a> o comando “convert 1 yottabyte in bytes” no <a href="http://www.infowester.com/blog/kilobyte-megabyte-gigabyte-terabyte-e-depois/#">Google</a> (como mostra a <a href="http://www.infowester.com/blog/kilobyte-megabyte-gigabyte-terabyte-e-depois/#">imagem</a> acima) e substitua ‘1′ pelo valor que você quiser e ‘yottabyte’ e ‘bytes’ pelas outras medidas citadas. Boa diversão, mas cuidado para não ficar zonzo no meio de tantos bytes. <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_wink.gif' alt=';)' class='wp-smiley' /> </p>
<p>Encontrei no: <a href="http://www.infowester.com/blog/kilobyte-megabyte-gigabyte-terabyte-e-depois/">Blog InfoWester</a>.</p>
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<title><![CDATA[New Guest Author, Robert Ash, Digital Image Archiving and Management]]></title>
<link>http://davidsaffir.wordpress.com/2009/06/14/new-guest-author-robert-ash-digital-image-archiving-and-management/</link>
<pubDate>Mon, 15 Jun 2009 06:07:57 +0000</pubDate>
<dc:creator>David  Saffir</dc:creator>
<guid>http://davidsaffir.wordpress.com/2009/06/14/new-guest-author-robert-ash-digital-image-archiving-and-management/</guid>
<description><![CDATA[In the next week or so, Robert Ash will contribute the first in a series of articles on archiving an]]></description>
<content:encoded><![CDATA[In the next week or so, Robert Ash will contribute the first in a series of articles on archiving an]]></content:encoded>
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<title><![CDATA[Version 1.26 !]]></title>
<link>http://projectblank.wordpress.com/2009/04/10/version-126/</link>
<pubDate>Fri, 10 Apr 2009 11:48:04 +0000</pubDate>
<dc:creator>dreske3</dc:creator>
<guid>http://projectblank.wordpress.com/2009/04/10/version-126/</guid>
<description><![CDATA[Hello, Yes, we made another update, and we&#8217;re doing well . Reduction: In Blender, the files ar]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Hello,</p>
<p>Yes, we made another update, and we&#8217;re doing well <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  .</p>
<h3><strong><span style="text-decoration:underline;">Reduction:</span></strong></h3>
<p>In Blender, the files are .blend-files, and our dick-tator (TommyNL), had 30MB .blend-files &#8230; He reduced that to <strong>9.4MB</strong> ! You can see the tiny differences in the screenshots posted below here.</p>
<p>You might see the rings at the radiator, each ring is a vertex, and it takes in tons of data &#8230;</p>
<p><strong>Advantages:</strong></p>
<p>- Loading-time is slower</p>
<p>- Better graphics-preformance (Your system needs to work less for almost the same thing.)</p>
<h3><strong><span style="text-decoration:underline;">Textures:</span></strong></h3>
<p>Like you might have noticed, we changed the textures a bit. These are getting better, and the holes in the tank-model will be fixed.</p>
<h3><strong><span style="text-decoration:underline;">Menu:</span></strong></h3>
<p>We changed the menu so there&#8217;s a sub-menu. We&#8217;ll make a video about this.</p>
<h3><strong><span style="text-decoration:underline;">Death:</span></strong></h3>
<p>First, you could only be killed when you where driving, due to the killing-script was inside the driving-script, so if you didn&#8217;t drive, you couldn&#8217;t get killed. Now, the killing-script is a script on his own.</p>
<p>But, the tank always touches the floor, and when hit, the script should think the tank collides with the bullet, sometimes however, the tank collides with the floor, so we need to fix that.</p>
<h3><strong><span style="text-decoration:underline;">Next:</span></strong></h3>
<p>- The holes in the tank-model.<br />
- Textures.<br />
- Outro and credits.</p>
<p>The first two thins aren&#8217;t easy, and it takes ages, but it gives awesome effects <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_wink.gif' alt=';)' class='wp-smiley' />  .</p>
<p>Screenshots:</p>
<p><img class="alignnone" title="Nr1" src="http://tommynl.comuf.com/Data/Images/nr1.png" alt="" width="1153" height="703" /></p>
<p><img class="alignnone" title="Nr2" src="http://tommynl.comuf.com/Data/Images/nr2.png" alt="" width="1154" height="707" /></p>
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<title><![CDATA[So you thought Terabytes were big - we need to sort our Brontobytes from Yottabytes and our Petabytes]]></title>
<link>http://sunwalked.wordpress.com/2009/04/07/so-you-thought-terabytes-were-big-we-need-to-sort-our-bontobytes-from-yottabytes-and-our-petabytes/</link>
<pubDate>Tue, 07 Apr 2009 08:33:39 +0000</pubDate>
<dc:creator>Roger</dc:creator>
<guid>http://sunwalked.wordpress.com/2009/04/07/so-you-thought-terabytes-were-big-we-need-to-sort-our-bontobytes-from-yottabytes-and-our-petabytes/</guid>
<description><![CDATA[What&#8217;s a Yottabyte? Yottabyte: A Yottabyte is approximately 1,000 Zettabytes. It would take ap]]></description>
<content:encoded><![CDATA[What&#8217;s a Yottabyte? Yottabyte: A Yottabyte is approximately 1,000 Zettabytes. It would take ap]]></content:encoded>
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<title><![CDATA[Internetgeschiedenis (ja, nog eens)!]]></title>
<link>http://omtersaaist.net/2009/02/09/internetgeschiedenis-ja-nog-eens/</link>
<pubDate>Mon, 09 Feb 2009 00:36:58 +0000</pubDate>
<dc:creator>pieterr</dc:creator>
<guid>http://omtersaaist.net/2009/02/09/internetgeschiedenis-ja-nog-eens/</guid>
<description><![CDATA[Sorry mensen, maar als ik zo&#8217;n filmpje zie kan ik er niet aan weerstaan&#8230; Te oordelen aan]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Sorry mensen, maar als ik <a title="RSS lezers, doorklikken voor het filmpje" href="http://omtersaaist.net/2009/02/09/internetgeschiedenis-ja-nog-eens/" target="_blank">zo&#8217;n filmpje</a> zie kan ik er <a href="http://omtersaaist.net/tag/geschiedenis+internet/" target="_blank">niet aan weerstaan</a>&#8230;</p>
<p><span style='text-align:center; display: block;'><object width='425' height='350'><param name='movie' value='http://www.youtube.com/v/DsbSpFaC4_w&#038;rel=1&#038;fs=1&#038;showsearch=0&#038;hd=0' /><param name='allowfullscreen' value='true' /><param name='wmode' value='transparent' /><embed src='http://www.youtube.com/v/DsbSpFaC4_w&#038;rel=1&#038;fs=1&#038;showsearch=0&#038;hd=0' type='application/x-shockwave-flash' allowfullscreen='true' width='425' height='350' wmode='transparent'></embed></object></span></p>
<p>Te oordelen aan de getoonde sites, moet het &#8216;94 of zo zijn geweest.&#160; &#8220;Cyberspace&#8221;, dat was de parallelle ruimte die men toen dacht dat het internet was &#8211; heel hip halverwege de jaren &#8216;90.&#160; </p>
<p>Enne&#8230;&#160; maar liefst 4MB geheugen met 400 MB harde schijf?&#160; Vandaag krijg je bij de PC-boer een bakbeest waar&#8230; duizend keer zoveel in zit.</p>
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<title><![CDATA[Verizon Data Plan Pricing Scam]]></title>
<link>http://tangercp.wordpress.com/2008/10/15/verizon-data-plan-pricing-scam/</link>
<pubDate>Wed, 15 Oct 2008 20:07:58 +0000</pubDate>
<dc:creator>tangercp</dc:creator>
<guid>http://tangercp.wordpress.com/2008/10/15/verizon-data-plan-pricing-scam/</guid>
<description><![CDATA[Verizon has a data usage pricing inconsistency bordering on a scam through the use of misleading mar]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Verizon has a data usage pricing inconsistency bordering on a scam through the use of misleading marketing and price advertising.<br />
On Verizon&#8217;s web site under certain (perhaps all) calling plans without data usage the price is listed at $1.99/megabyte. Even the fine print indicates that this is the price. However if you have a PDA phone such as a Pocket PC XV6900, Palm, etc. they actually charge $0.015/kilobyte. Since 1 Megabyte is 1024 kilobytes this comes out to $0.015 x (1024 kilobytes/megabyte) = $15.36/megabyte. Which is 7.71 times more per unit of data than if you have a regular phone.</p>
<p>This is outrageous especially since PDA phone users often use *MORE* data than someone on a phone, which would make them more money.</p>
<p>I happen to use less than 10 megabytes/month of data. That is sufficient for me to sync my email when I am away from my desk for long periods of time, only a few times a month.</p>
<p>So, I thought I should post this so everyone knows what is going on.</p>
<p>I saw the $1.99 price and used the data, until I checked my usage for the month at 6,419.06 KB where it predicted I would be billed $96.30. I promptly called Verizon to find out what was going on.</p>
<p>Since I realized this was the case before I was billed, Verizon was nice enough to allow me to retroactively change to an unlimited data plan for $29.99/month so I wouldn&#8217;t be charged $96.30.</p>
<p>Check it out <a href="http://www.verizonwireless.com/b2c/store/controller?item=planFirst&#38;action=viewPlanList&#38;sortOption=priceSort&#38;typeId=1&#38;subTypeId=1&#38;catId=323">HERE</a> for yourself, just browse plans, enter your zip code if necessary and it is the third bullet point from the top $1.99/MB.</p>
<p>I wonder if you sign up for the plan on a regular phone, then switch it via their website to the ESN of a PDA phone&#8230;.</p>
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<title><![CDATA[Qué son los Gigas y los Megas]]></title>
<link>http://basicoyfacil.wordpress.com/2008/10/05/los-gigas-y-los-megas/</link>
<pubDate>Sun, 05 Oct 2008 14:03:39 +0000</pubDate>
<dc:creator>destroyer</dc:creator>
<guid>http://basicoyfacil.wordpress.com/2008/10/05/los-gigas-y-los-megas/</guid>
<description><![CDATA[En las unidades de almacenamiento como discos duros, llaves usb o pendrive, tarjetas de memoria, etc]]></description>
<content:encoded><![CDATA[En las unidades de almacenamiento como discos duros, llaves usb o pendrive, tarjetas de memoria, etc]]></content:encoded>
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<title><![CDATA[Ecco quanto è grande Google]]></title>
<link>http://sarkazzotips.wordpress.com/2008/09/04/ecco-quanto-e-grande-google/</link>
<pubDate>Thu, 04 Sep 2008 03:57:32 +0000</pubDate>
<dc:creator>sarkazzo</dc:creator>
<guid>http://sarkazzotips.wordpress.com/2008/09/04/ecco-quanto-e-grande-google/</guid>
<description><![CDATA[Dal blog blog.managednetworks.co.uk Google processa 20 Petabytes di dati al giorno. Ecco una spiegaz]]></description>
<content:encoded><![CDATA[Dal blog blog.managednetworks.co.uk Google processa 20 Petabytes di dati al giorno. Ecco una spiegaz]]></content:encoded>
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<title><![CDATA[Wireless mobile broadband - Does it work?]]></title>
<link>http://alexanderjansen.wordpress.com/2008/08/30/wireless-mobile-broadband-does-it-work/</link>
<pubDate>Sat, 30 Aug 2008 23:51:51 +0000</pubDate>
<dc:creator>Alexander Jansen</dc:creator>
<guid>http://alexanderjansen.wordpress.com/2008/08/30/wireless-mobile-broadband-does-it-work/</guid>
<description><![CDATA[Ever wondered about the new mobile broadband technology? Well, then you better check this out! I bou]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Ever wondered about the new mobile broadband technology?</p>
<p>Well, then you better check this out!</p>
<p><a href="http://alexanderjansen.files.wordpress.com/2008/08/telenorbredband.jpg"><img class="alignnone size-full wp-image-42" src="http://alexanderjansen.wordpress.com/files/2008/08/telenorbredband.jpg" alt="" width="344" height="301" /></a></p>
<p><!--more--></p>
<p>I bought a computer (Fujitsu Siemens Esprimo V5355) and a LG cell phone (Don&#8217;t recall model.) and Telenor Mobile Broadband for one kroner (Like two cents in U.S. Dollars.). The computer is okay, nothing to really brag about, but it works for  blogging and schoolwork (Which was the intention of buying it!) &#8212; And Warcraft 3 ; )</p>
<p>But over to the point;</p>
<p>The idea of mobile broadband sounds very excellent in theory (and in commercials), but does it live up to its name?</p>
<p>Well, the simple question is Yes &#8212; The more exact answer is ne-aj.</p>
<p>The technology is basiclly built up on the premise of the USB-advice automatically chooses the best available speed for you. Edge, gsm, wi-fi, 3g or 3g-turbo. Which gives you 0,5 &#8211; 1,5 mb/s depending on where you are with 3g / turbo &#8211; Or a rather standarized 50-100 kb/s if you are using edge / gsm.</p>
<p>Norway is still upgrading their zones, which means that the rather small places (Such as where you&#8217;ll normally have your cabbin) probably will not have the best 3G-corverage.</p>
<p>Where I have my hut, is abit to the north in Norway, Oppdal to be exact. The 3G up here is actually quite strong. Even though it does live its own life &#8211; Falling in and out all the time. I tried streaming a three minute long YouTube video, which took around four minutes to load &#8212; Which really isn&#8217;t that bad with low UTMS signal strength.</p>
<p>Reading the newspaper, or blogging is a dream though. Goes very smoothly, so it makes it perfect for a quick update on the cabbin.</p>
<p>The type of subscription that I got gives me free access from 17:00 to 07:00, each weekday, and free access all weekend long &#8212; Starting 17:00 on fridays, ending 07:00 on Mondays, making it brilliant for cabbin tours.</p>
<p>As stated; The internet is something falling in and out, making it a bit unrelyable when streaming.</p>
<p>Back in the city (Trondheim) I had 1.7 mb/s &#8212; 6.2 mb/s at the St. Olavs hospital, which actually do make it a viable replacement for i.e. playing internet games (World of Warcraft / Waracraft 3 or counter-strike to name a few.).</p>
<p>Here at the cabbin, I had 1.1 mb/s with 3G, and a dissapointing 15 kb/s with the edge (3/4 tests I had 15-18 kb/s, but I also got a 125 kb/s on one.)</p>
<p>So my conclusion has to come to this:</p>
<p>The mobil broadband is very great for a man on the move. It&#8217;s excellent for writing blogs, checking news or downloading mail. Streaming and downloading gets to be a bit of a hassle (depending on where you are.), but by all means it is doable.</p>
<p>The word on the &#8220;street&#8221; is that the telephone companies will be expanding their equipement to give out 20 mb/s in 2-3 years. So I am looking forward to that.</p>
<p><a href="http://alexanderjansen.files.wordpress.com/2008/08/telenorbredband.jpg"><br />
</a></p>
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<title><![CDATA[BIT sampai BRONTOBYTE]]></title>
<link>http://zakiniku.wordpress.com/2008/08/25/bit-sampai-brontobyte/</link>
<pubDate>Mon, 25 Aug 2008 23:05:16 +0000</pubDate>
<dc:creator>zakiniku</dc:creator>
<guid>http://zakiniku.wordpress.com/2008/08/25/bit-sampai-brontobyte/</guid>
<description><![CDATA[Mengingat kembali satuan data dalam dunia komputer bagi yang sudah lupa. Dan sebagai tambahan ilmu b]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p>Mengingat kembali satuan data dalam dunia komputer bagi yang sudah lupa. Dan sebagai tambahan ilmu bagi yang belum tahu.</p>
<p>Artikel asli dari teman lalu diterjemahkan secara bebas.</p>
<p>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</p>
<p><span style="color:#0000ff;">Bit</span> : Satu bit adalah satuan terkecil data yang dipergunakan komputer. Bisa mewakili sebuah informasi YA atau TIDAK (0 atau 1)</p>
<p><span style="color:#0000ff;">Byte </span> : Satu Byte terdiri dari 8 Bit. Satu Byte bisa mewakili 256 informasi, misalnya angka-angka atau kombinasi huruf dan angka. Bisa jadi setara dengan satu character.</p>
<p>10 Bytes bisa jadi setara dengan satu kata. 100 Bytes Bisa jadi setara dengan sebuah kalimat yang sedang.</p>
<p><span style="color:#0000ff;">Kilobyte</span> : Terdiri atas 1024 Byte. 1 Kilobyte bisa seukuran paragraf yang sedang anda baca, adapun 100 Kilobyte bisa seukuran satu halaman penuh.</p>
<p><span style="color:#0000ff;">Megabyte </span>: Umum sekali digunakan sebagai satuan ukuran atau kapasitas penyimpanan, total 1,048,576 byte. Megabyte sering disingkat juga dengan M or MB.</p>
<p><span style="color:#0000ff;">Gigabyte</span> : Satu gigabyte yaitu 1,024 megabytes. Gigabyte sering disingkat dengan G or GB.</p>
<p><span style="color:#0000ff;">Terabyte</span> : 1,024 GB yaitu lebih dari 1 trilyun byte.</p>
<p><span style="color:#0000ff;">Petabyte</span> : 1,024 terabyte.</p>
<p><span style="color:#0000ff;">Exabyte</span> : 1,024 petabyte.</p>
<p><span style="color:#0000ff;">Zettabyte</span> : 1,024 exabyte.<br />
<span style="color:#0000ff;"><br />
Yottabyte</span> : 1,024 zettabytes. Dalam ukuran byte (1,024,000,000,000,000,000,000,000) bytes<br />
Terdapat 24 digit angka di belakang angka 1</p>
<p><span style="color:#0000ff;">Brontobyte</span> : 1,024 Yottabyte. 27 digit di belakang 1</p>
<p><span style="text-decoration:underline;"><span style="color:#993366;"><span style="color:#800080;">Ringkasan    :</span> </span></span><br />
<span style="color:#0000ff;"> </span><span style="color:#0000ff;"><br />
· 1 Bit                                                : Binary Digit<br />
· 8 Bits                                           : 1 Byte<br />
· 1024 Bytes                         : 1 Kilobyte<br />
· 1024 Kilobytes           : 1 Megabyte<br />
· 1024 Megabytes       : 1 Gigabyte<br />
· 1024 Gigabytes         : 1 Terabyte<br />
· 1024 Terabytes         : 1 Petabyte<br />
· 1024 Petabytes         : 1 Exabyte -<br />
· 1024 Exabytes             : 1 Zettabyte<br />
· 1024 Zettabyte         : 1 Yottabyte<br />
· 1024 Yottabyte         : 1 Brontobyte </span></p>
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<title><![CDATA[Megabyte, Gigabyte, Terabyte... e depois?]]></title>
<link>http://ivisandrade.wordpress.com/2008/08/21/megabyte-gigabyte-terabyte-e-depois/</link>
<pubDate>Thu, 21 Aug 2008 20:25:58 +0000</pubDate>
<dc:creator>Ivis Andrade</dc:creator>
<guid>http://ivisandrade.wordpress.com/2008/08/21/megabyte-gigabyte-terabyte-e-depois/</guid>
<description><![CDATA[Sempre tive a dúvida mas não tinha procurado saber, e hoje pesquisei&#8230;(uma dúvida minha e de um]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><p><img class="size-medium wp-image-94 alignleft" src="http://ivisandrade.wordpress.com/files/2008/08/bytes-703225.jpg?w=300" alt="" width="162" height="162" /> Sempre tive a dúvida mas não tinha procurado saber, e hoje pesquisei&#8230;(uma dúvida minha e de um amigo)</p>
<p>Qual será o próximo depois de TERABYTE? eu já tinha ouvido falar de um tal de PETABYTE, mas até então não tinhamos sido apresentados.</p>
<p>Vamos lá:</p>
<p>· 1 Bit = Digito binário<br />
· 8 Bits = 1 Byte<br />
· 1024 Bytes = 1 Kilobyte<br />
· 1024 Kilobytes = 1 Megabyte<br />
· 1024 Megabytes = 1 Gigabyte<br />
· 1024 Gigabytes = 1 Terabyte<br />
· 1024 Terabytes = 1 Petabyte<br />
· 1024 Petabytes = 1 Exabyte<br />
· 1024 Exabytes = 1 Zettabyte<br />
· 1024 Zettabytes = 1 Yottabyte<br />
· 1024 Yottabytes = 1 Brontobyte<br />
· 1024 Brontobytes = 1 Geopbyte<br />
· 1024 Geopbytes = ? ? ? ?</p>
<p>Legal, agora quero um HD com 1 PETABYTE.</p>
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<title><![CDATA[Periferiche]]></title>
<link>http://khongkong.wordpress.com/2008/08/05/periferiche/</link>
<pubDate>Tue, 05 Aug 2008 15:54:43 +0000</pubDate>
<dc:creator>raf</dc:creator>
<guid>http://khongkong.wordpress.com/2008/08/05/periferiche/</guid>
<description><![CDATA[Storia delle Periferiche Una memory card, o scheda di memoria, è un dispositivo elettronico portatil]]></description>
<content:encoded><![CDATA[<div class='snap_preview'><h1 class="firstHeading"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Storia delle Periferiche</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Una memory card, o scheda di memoria, è un </span><a class="mw-redirect" title="Dispositivo elettronico" href="http://it.wikipedia.org/wiki/Dispositivo_elettronico"><span style="font-size:x-small;font-family:Tahoma;">dispositivo elettronico</span></a><span style="font-size:x-small;font-family:Tahoma;"> portatile di ridotte dimensioni in grado di immagazzinare dati in forma digitale e di mantenerli in memoria anche in assenza di alimentazione elettrica. A tale scopo utilizza una </span><a title="Memoria flash" href="http://it.wikipedia.org/wiki/Memoria_flash"><span style="font-size:x-small;font-family:Tahoma;">memoria flash</span></a><span style="font-size:x-small;font-family:Tahoma;"> (</span><a title="Memoria non volatile" href="http://it.wikipedia.org/wiki/Memoria_non_volatile"><span style="font-size:x-small;font-family:Tahoma;">memoria non volatile</span></a><span style="font-size:x-small;font-family:Tahoma;">) contenuta al suo interno.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Le schede di memoria vengono utilizzate per due fini: per il salvataggio di dati di gioco nelle </span><a title="Console" href="http://it.wikipedia.org/wiki/Console"><span style="font-size:x-small;font-family:Tahoma;">console</span></a><span style="font-size:x-small;font-family:Tahoma;"> e per memorizzare file (musica, immagini o altro) su periferiche portatili.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Ne esistono vari tipi: alcuni sono &#8220;</span><a class="new" title="Standard proprietario (pagina inesistente)" href="http://it.wikipedia.org/w/index.php?title=Standard_proprietario&#38;action=edit&#38;redlink=1"><span style="font-size:x-small;font-family:Tahoma;">proprietari</span></a><span style="font-size:x-small;font-family:Tahoma;">&#8220;, ovvero funzionano solo sui dispositivi elettronici per i quali sono stati progettati (come ad esempio le <em>memory card</em> per le </span><a title="PlayStation" href="http://it.wikipedia.org/wiki/PlayStation"><span style="font-size:x-small;font-family:Tahoma;">PlayStation</span></a><span style="font-size:x-small;font-family:Tahoma;">), mentre altri sono compatibili con una grande varietà di dispositivi elettronici, rendendo così possibile lo scambio di dati tra di essi.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Le schede di <em>memoria</em> sono da considerarsi un&#8217;evoluzione dei classici </span><a title="Floppy disk" href="http://it.wikipedia.org/wiki/Floppy_disk"><span style="font-size:x-small;font-family:Tahoma;">floppy disk</span></a><span style="font-size:x-small;font-family:Tahoma;"> utilizzati in passato per trasferire dati da un </span><a title="Computer" href="http://it.wikipedia.org/wiki/Computer"><span style="font-size:x-small;font-family:Tahoma;">computer</span></a><span style="font-size:x-small;font-family:Tahoma;"> all&#8217;altro, rispetto ai quali hanno due fondamentali vantaggi: la non influenzabilità da parte dei campi magnetici, e l&#8217;enorme capacità di memoria rispetto ai floppy. Anche la più piccola tra le <em>memory card</em> oggi in commercio, infatti, con una capacità di appena 16 o 32 </span><a title="Megabyte" href="http://it.wikipedia.org/wiki/Megabyte"><span style="font-size:x-small;font-family:Tahoma;">MB</span></a><span style="font-size:x-small;font-family:Tahoma;">, può contenere l&#8217;equivalente dei dati contenuti rispettivamente in 11 o 22 classici </span><a class="mw-redirect" title="Floppy" href="http://it.wikipedia.org/wiki/Floppy"><span style="font-size:x-small;font-family:Tahoma;">floppy</span></a><span style="font-size:x-small;font-family:Tahoma;">, con un ingombro notevolmente inferiore.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">L&#8217;utilizzo di <em>schede di memoria</em> riduce anche considerevolmente il <em>costo per <a title="Megabyte" href="http://it.wikipedia.org/wiki/Megabyte">megabyte</a></em>: un </span><a class="mw-redirect" title="Floppy" href="http://it.wikipedia.org/wiki/Floppy"><span style="font-size:x-small;font-family:Tahoma;">floppy</span></a><span style="font-size:x-small;font-family:Tahoma;"> da 1.44 </span><a title="Megabyte" href="http://it.wikipedia.org/wiki/Megabyte"><span style="font-size:x-small;font-family:Tahoma;">MB</span></a><span style="font-size:x-small;font-family:Tahoma;"> che costi 50 centesimi di </span><a title="Euro" href="http://it.wikipedia.org/wiki/Euro"><span style="font-size:x-small;font-family:Tahoma;">euro</span></a><span style="font-size:x-small;font-family:Tahoma;"> ha un costo per MB di 35 centesimi, contro gli 0,98 di una <em>memory card</em> da 512 </span><a title="Megabyte" href="http://it.wikipedia.org/wiki/Megabyte"><span style="font-size:x-small;font-family:Tahoma;">MB</span></a><span style="font-size:x-small;font-family:Tahoma;"> (costo intorno ai 5 euro) e gli 0,54 centesimi di una <em>card</em> da 4 </span><a title="Gigabyte" href="http://it.wikipedia.org/wiki/Gigabyte"><span style="font-size:x-small;font-family:Tahoma;">GB</span></a></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">MultiMediaCard</span></span></h1>
<div id="jump-to-nav"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">La <strong>MultiMediaCard</strong> (<strong>MMC</strong>) è stato uno dei primi standard di </span><a class="mw-redirect" title="Memory card" href="http://it.wikipedia.org/wiki/Memory_card"><span style="font-size:x-small;font-family:Tahoma;">memory card</span></a><span style="font-size:x-small;font-family:Tahoma;"> a comparire sul mercato, insieme alle </span><a title="SmartMedia" href="http://it.wikipedia.org/wiki/SmartMedia"><span style="font-size:x-small;font-family:Tahoma;">SmartMedia</span></a><span style="font-size:x-small;font-family:Tahoma;">. È meno soggetta agli urti perché più robusta. Ha la stessa forma e la stessa </span><a title="Piedinatura" href="http://it.wikipedia.org/wiki/Piedinatura"><span style="font-size:x-small;font-family:Tahoma;">piedinatura</span></a><span style="font-size:x-small;font-family:Tahoma;"> delle successive </span><a title="Secure Digital" href="http://it.wikipedia.org/wiki/Secure_Digital"><span style="font-size:x-small;font-family:Tahoma;">Secure Digital</span></a><span style="font-size:x-small;font-family:Tahoma;"> (SD), con le quali è compatibile: una MMC entra in uno slot per una SD, ma non è vero il contrario, perché le SD sono più spesse. Alcuni lettori </span><a title="MP3" href="http://it.wikipedia.org/wiki/MP3"><span style="font-size:x-small;font-family:Tahoma;">MP3</span></a><span style="font-size:x-small;font-family:Tahoma;"> non supportano le MMC perché queste, a differenza delle SD, non supportano i contenuti criptati. Inoltre le MMC, a differenza delle SD, non hanno lo <em>switch</em> che permette di proteggerle dalla scrittura.</span></span></div>
<h2><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">RS MMC</span> </span></span></span></h2>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Esiste anche una versione di MMC di dimensioni ridotte, chiamata <strong>RS-MMC</strong> (<strong>Reduced Size MultiMedia Card</strong>), del tutto identica nelle specifiche alla MMC classica, tranne che per le dimensioni, ridotte di circa la metà. Questo tipo di </span><a class="mw-redirect" title="Memory card" href="http://it.wikipedia.org/wiki/Memory_card"><span style="font-size:x-small;font-family:Tahoma;">memory card</span></a><span style="font-size:x-small;font-family:Tahoma;"> è stato introdotto nel </span><a title="2004" href="http://it.wikipedia.org/wiki/2004"><span style="font-size:x-small;font-family:Tahoma;">2004</span></a><span style="font-size:x-small;font-family:Tahoma;">. Attraverso un adattatore che serve semplicemente ad estendere le dimensioni della card le RS-MMC possono essere usate in qualsiasi slot per MMC (o </span><a title="Secure Digital" href="http://it.wikipedia.org/wiki/Secure_Digital"><span style="font-size:x-small;font-family:Tahoma;">SD</span></a><span style="font-size:x-small;font-family:Tahoma;">). Attualmente sono disponibili in vari formati che possono arrivare fino a un massimo di 8 </span><a title="Gigabyte" href="http://it.wikipedia.org/wiki/Gigabyte"><span style="font-size:x-small;font-family:Tahoma;">GB</span></a><span style="font-size:x-small;font-family:Tahoma;">. Questo tipo di card è molto usato dalla </span><a title="Nokia" href="http://it.wikipedia.org/wiki/Nokia"><span style="font-size:x-small;font-family:Tahoma;">Nokia</span></a><span style="font-size:x-small;font-family:Tahoma;"> nei suoi </span><a title="Smartphone" href="http://it.wikipedia.org/wiki/Smartphone"><span style="font-size:x-small;font-family:Tahoma;">smartphone</span></a><span style="font-size:x-small;font-family:Tahoma;"> della Serie 60 e dalla </span><a title="Siemens" href="http://it.wikipedia.org/wiki/Siemens"><span style="font-size:x-small;font-family:Tahoma;">Siemens</span></a><span style="font-size:x-small;font-family:Tahoma;">.</span></span></div>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;"> </span></span></div>
<div class="thumb tright"><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline"><strong>DV RS MMC o MMC<em>mobile</em></strong></span> </span></span></span></div>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Le nuove carte RS-MMC, usate nei cellulari </span><a title="Nokia" href="http://it.wikipedia.org/wiki/Nokia"><span style="font-size:x-small;font-family:Tahoma;">Nokia</span></a><span style="font-size:x-small;font-family:Tahoma;"> più recenti (come il Nokia 6630, il 6680 e l&#8217;</span><a title="Nokia N70" href="http://it.wikipedia.org/wiki/Nokia_N70"><span style="font-size:x-small;font-family:Tahoma;">N70</span></a><span style="font-size:x-small;font-family:Tahoma;">), utilizzano un </span><a title="Potenziale elettrico" href="http://it.wikipedia.org/wiki/Potenziale_elettrico"><span style="font-size:x-small;font-family:Tahoma;">voltaggio</span></a><span style="font-size:x-small;font-family:Tahoma;"> più basso (1.8 V invece di 3 V) per ridurre il consumo della batteria. Queste card RS MMC a basso voltaggio sono conosciute come <strong>Dual-Voltage Reduced-Size MMC</strong> (<strong>DV RS-MMC</strong>), e possono essere messe in commercio come <strong>MMC<em>mobile</em></strong> quando soddisfano gli standard per le cards MMC<em>mobile</em>. Questi dispositivi di memoria sono compatibili con le vecchie RS-MMC.</span></span></p>
<p><span class="usualtext"><a id="MMC_Micro" name="MMC_Micro"></a></span></p>
<h2><span class="mw-headline"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">MMC Micro</span></span></span></h2>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">In alcuni cellulari sono state utilizzate, viste le ridotte dimensioni, le schede MMC micro, che con un apposito adattatore possono essere lette nei lettori di MMC. Sono poco diffuse come tipologie di schede, essendo utilizzate solo su alcuni modelli di cellulari </span><a title="Samsung" href="http://it.wikipedia.org/wiki/Samsung"><span style="font-size:x-small;font-family:Tahoma;">Samsung</span></a><span style="font-size:x-small;font-family:Tahoma;"> come il d730. La scheda appare molto simile alla </span><a class="new" title="Microsd (pagina inesistente)" href="http://it.wikipedia.org/w/index.php?title=Microsd&#38;action=edit&#38;redlink=1"><span style="font-size:x-small;font-family:Tahoma;">MicroSD</span></a><span style="font-size:x-small;font-family:Tahoma;"> ma risulta essere tuttavia incompatibile per pin e dimensioni fisiche. Anche la MMC micro sfrutta la tecnologia dual voltage</span></span></div>
<p><span class="usualtext"><a id="Caratteristiche" name="Caratteristiche"></a></span></p>
<h2><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">Caratteristiche</span> </span></span></span></h2>
<div>
<ul><span class="usualtext"></p>
<li><span style="font-size:x-small;font-family:Tahoma;">dimensioni: 30 x 23 x 1,4 mm (RS-MMC: 18 x 24 x 1,4 mm) (MMC mbile: 14mm x 11mm x 1.1mm) </span></li>
<li><span style="font-size:x-small;font-family:Tahoma;">velocità trasferimento dati: fino a 2,5 </span><a title="Megabyte" href="http://it.wikipedia.org/wiki/Megabyte"><span style="font-size:x-small;font-family:Tahoma;">MB</span></a><span style="font-size:x-small;font-family:Tahoma;">/sec </span></li>
<li><span style="font-size:x-small;font-family:Tahoma;">resistenza alle vibrazioni: 15 </span><a title="G" href="http://it.wikipedia.org/wiki/G"><span style="font-size:x-small;font-family:Tahoma;">g</span></a><span style="font-size:x-small;font-family:Tahoma;"> </span></li>
<li><span style="font-size:x-small;font-family:Tahoma;">resistenza agli urti: 1000 </span><a title="G" href="http://it.wikipedia.org/wiki/G"><span style="font-size:x-small;font-family:Tahoma;">g</span></a><span style="font-size:x-small;font-family:Tahoma;"> </span></li>
<li><span style="font-size:x-small;font-family:Tahoma;">consumo di corrente: max 60 m</span><a title="A" href="http://it.wikipedia.org/wiki/A"><span style="font-size:x-small;font-family:Tahoma;">A</span></a><span style="font-size:x-small;font-family:Tahoma;"> </span></li>
<li><span style="font-size:x-small;font-family:Tahoma;">alimentazione: 2,7 &#8211; 3,6 </span><a title="V" href="http://it.wikipedia.org/wiki/V"><span style="font-size:x-small;font-family:Tahoma;">V</span></a><span style="font-size:x-small;font-family:Tahoma;"> </span></li>
<p></span></ul>
</div>
<p><span class="mw-headline"><span class="usualtext"><strong><span style="font-size:x-small;font-family:Tahoma;">CompactFlash</span></strong></span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Questo tipo di supporto venne realizzato nel &#8220;lontano&#8221; </span><a title="1994" href="http://it.wikipedia.org/wiki/1994"><span style="font-size:x-small;font-family:Tahoma;">1994</span></a><span style="font-size:x-small;font-family:Tahoma;"> dalla </span><a title="SanDisk" href="http://it.wikipedia.org/wiki/SanDisk"><span style="font-size:x-small;font-family:Tahoma;">SanDisk</span></a><span style="font-size:x-small;font-family:Tahoma;">. La card si basa sullo standard </span><a class="mw-redirect" title="PCMCIA" href="http://it.wikipedia.org/wiki/PCMCIA"><span style="font-size:x-small;font-family:Tahoma;">PCMCIA</span></a><span style="font-size:x-small;font-family:Tahoma;"> (Personal Computer Memory Card International Association) e può essere utilizzata attraverso un adattatore meccanico negli slot di PC Card presenti su buona parte dei computer portatili. Hanno una dimensione di 43 x 36 mm e sono state prodotte secondo due fattori di forma: Tipo I con spessore di 3,3 mm e Tipo II con spessore di 5 mm. Hanno un peso che varia tra gli 8 ed i 12 grammi. Le capacità iniziali non superavano i 200 Mb per le Tipo I e i 300 Mb per le II, ma ora possono raggiungere i 16GB. Utilizzano una connessione a 50 pin ad inserimento meccanico. Nel corso degli anni a queste due tipologie se ne è aggiunta una terza chiamata Ultra Compact Flash (attualmente Ultra II e Ultra III con capacità fino a 16 GB), che ha un transfer-rate doppio rispetto alle tradizionali card (10 MB/s per le Ultra II e 20MB/s per le Ultra III). Quest&#8217;ultimo supporto venne creato principalmente per la registrazione di sequenze fotografiche ad alta risoluzione, ed ha rappresentato un ottimo compromesso fino all&#8217;entrata sul campo di formati più innovativi. Inoltre, per aumentarne la diffusione sono stati introdotti una serie di lettori/adattatori che permettono l&#8217;utilizzo su porta USB o direttamente attraverso floppy drive.</span></span></p>
<p><span class="usualtext"><a id="SmartMedia" name="SmartMedia"></a></span></p>
<h3><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">SmartMedia</span> </span></span></span></h3>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Supporto inizialmente chiamato SSFDC (solid-state floppy disk card), sviluppato da Toshiba. Dimensionalmente è simile alle CompactFlash (45 x 37 mm), ma risulta essere decisamente più sottile raggiungendo lo spessore di circa 1 mm (0,76 mm per la precisione). Sono anche più leggere visto che il loro peso arriva a circa 2 grammi. Utilizzano una connessione a 22 pin ad inserimento meccanico. A differenza delle Compact Flash non contengono un controller integrato; la logica di controllo è infatti spostata verso il dispositivo che funge da lettore. Inoltre, è possibile leggere e scrivere dei blocchi di memoria piuttosto piccoli (256- 512 bytes), permettendo una migliore organizzazione e gestione delle informazioni. Fisicamente, però, risultano meno robuste rispetto alle CF e con spazi di memorizzazione generalmente inferiori. Inoltre, almeno inizialmente, il rapporto spazio/costo è stato sfavorevole per questo tipo di supporti che vennero utilizzati su dispositivi con grande integrazione dove era necessario limitare l&#8217;ingombro. Presentano un transfer-rate che arriva a 3,5 Mb/s. Hanno il grosso difetto che non è possibile creare supporti SM con capacità superiore a 128Mb.</span></span></div>
<p><span class="usualtext"><a id="MultiMediaCard_e_TwinMOS-MMC" name="MultiMediaCard_e_TwinMOS-MMC"></a></span></p>
<h3><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">MultiMediaCard e TwinMOS-MMC</span> </span></span></span></h3>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">L&#8217;arrivo di questo tipo di memory card rappresenta una vera svolta. Nascono nel 1997 da una collaborazione tra SanDisk e Samsung le quali puntarono ad un supporto poco ingombrante e sottile. In effetti il risultato è di tutto rispetto visto che le dimensioni sono simili a quelle di un francobollo(24 x 32 mm) per uno spessore di soli 1,4 mm. Pesano meno di 2 grammi. La velocità di lettura e scrittura è doppia rispetto alle CF e già nel 2002 offrono capacità fino a 128 Mb. Un&#8217;altra novità è il tipo di collegamento che non è più a pin ma è costituito da contatti meccanici (7 linee) decisamente più versatili e meno inclini a danneggiarsi. Infine presentano la possibilità di cifrare il contenuto informativo, cosa che risulta particolarmente interessante tant&#8217;è che nasce una associazione chiamata MMCA (MultiMedia Card Association) di cui fanno parte importanti produttori come HP, Siemens, Palm per promuovere l&#8217;utilizzo di questo supporto nella distribuzione di materiale protetto da copyright. In genere raggiungono un transfer rate di circa 2,5 Mb/s.</span></span></p>
<p><span class="usualtext"><a id="Memory_Stick" name="Memory_Stick"></a></span></p>
<h3><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">Memory Stick</span> </span></span></span></h3>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Rappresentano una soluzione completamente proprietaria nata in casa Sony. Anche questo tipo di memoria utilizza, come per i precedenti dispositivi di tipo flash, un contenitore fatto di materiale plastico particolarmente resistente agli urti. La novità rispetto agli altri supporti è che presentano un selettore per evitare la cancellazione accidentale del dispositivo. Hanno dimensioni di 21,5 x 50 mm con spessore di poco inferiore ai 3 mm. Pesano circa 4 grammi e utilizzano una contattiera a 10 linee. Hanno subito un&#8217;evoluzione prettamente dimensionale che ha portato alla nascita di un nuovo supporto chiamato MemoryStick Duo. Le dimensioni si riducono raggiungendo i 20 x 32 mm con uno spessore di 1,6 mm. Funzionalmente però rimangono praticamente identiche al formato precedente. Teoricamente secondo il progetto di Sony potrebbero raggiungere capacità di 32 Gb, ma sul mercato sono reperibili quelle che arrivano a 8 Gb. Il transfer rate va da 15 Mb/s a 160 Mb/s.</span></span></p>
<p><span class="usualtext"><a id="SD" name="SD"></a></span></p>
<h3><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">SD</span> </span></span></span></h3>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Questa tecnologia nasce nel 1999 e viene sviluppata in un progetto congiunto da Matsushita, Toshiba e SanDisk. Fondamentalmente concentra le migliori caratteristiche di tutti gli altri supporti. Hanno un transfer-rate molto elevato ed un consumo energetico ridotto (in Sleep = 250 uA, Lettura / Scrittura = 80 mA). Sono di dimensioni molto contenute (32 x 24 mm per 2,1 mm di spessore), hanno un collegamento a contatti metallici (9 linee) e pesano circa 2 grammi. Offrono capacità di memorizzazione elevate (attualmente sono disponibili i tagli da 32 GB) e funzionalità di cifratura del contenuto, con un transfer-rate che raggiunge i 22,5Mb/s nelle nuove 150x. Presentano, inoltre, un selettore per renderle read-only al fine di evitare la cancellazione accidentale dei dati. Sul mercato è stata presentata anche una card con un fattore di forma ridotto chiamato <em>MiniSD</em> messa a punto per venire incontro alle esigenze del mercato della telefonia cellulare. Queste card hanno dimensioni pari a 21,5 x 20 mm per uno spessore di 1,4 mm ed un peso di 1 grammo. Permettono di raggiungere degli ottimi livelli di risparmio energetico arrivando a consumare appena 150 uA in sleep mode, 40 mA in lettura e 50 mA in scrittura. I tagli attualmente disponibili arrivano a 2 GB. Raggiungono un transfer-rate massimo di 10 Mb/s. Esistono anche schede di tipo <strong>microSD</strong> o <em>TransFlash</em> (dimensioni di 15 per 11 per 1 mm). Ultra II SD è disponibile fino alla capacità di 4 </span><a title="Gigabyte" href="http://it.wikipedia.org/wiki/Gigabyte"><span style="font-size:x-small;font-family:Tahoma;">GB</span></a><span style="font-size:x-small;font-family:Tahoma;"> ed è dotata di un&#8217;interfaccia USB. È possibile connettere la memoria direttamente a una porta USB senza la necessità di un card reader.</span></span></div>
<p><span class="mw-headline"><span class="usualtext"><strong><span style="font-size:x-small;font-family:Tahoma;">MicroSD</span></strong></span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">La </span><a title="MicroSD" href="http://it.wikipedia.org/wiki/MicroSD"><span style="font-size:x-small;font-family:Tahoma;">MicroSD</span></a><span style="font-size:x-small;font-family:Tahoma;"> (precedente TransFlash) è un memoria flash dalle dimensioni ridottissime (15 x 11 x 1 millimetri), semi-rimovibile basata sullo standard delle miniSD, questo nuovo tipo di card viene utilizzata da molti telefoni di recente uscita, tra i quali tutti i nuovi Motorola con slot integrato. Esiste con capienza fino a 8 </span><a title="Gigabyte" href="http://it.wikipedia.org/wiki/Gigabyte"><span style="font-size:x-small;font-family:Tahoma;">GB</span></a><span style="font-size:x-small;font-family:Tahoma;">. Per le difficoltà di gestione date le ridottissime dimensioni la TransFlash è un prodotto che molto probabilmente sarà supportato solo da produttori di telefonia mobile, ma dato l’incremento di capacità molto probabilmente sarà adottato anche nei palmari. Nel luglio 2005 le TransFlash sono state adottate ufficialmente dalla SDA (SD Card Association) diventando le microSD.</span></span></p>
<p><span class="usualtext"><a id="xD-Picture_Card" name="xD-Picture_Card"></a></span></p>
<h3><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><span class="mw-headline">xD-Picture Card</span> </span></span></span></h3>
<div class="thumb tright"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Le xD-Picture Card hanno un peso di soli 2 grammi ed insieme alle transFlash risultano le memorie flash più piccole disponibili oggi sul mercato, grazie alle sue dimensioni 20 x 25 x 1,7 mm. La xD Picture Card e stata sviluppata dalla Olympus e prodotta da Toshiba per rimpiazzare l&#8217;oramai datato formato delle SmartMedia. Il formato xD è stato creato pensando alla futura generazione di macchine fotografiche, che hanno sempre più bisogno di maggiori capacita di trasferimento dati e capacita di memorizzazione, tutto in formati sempre più piccoli. Questo formato ha avuto un rapidissimo processo di evoluzione; agli inizi, le xD-picture Card avevano dimensioni di 16MB, attualmente arrivano anche a 2GB e in futuro potranno raggiungere dimensioni di 8GB. Read/Write Speeds: agli inizi con le schede da 16/32 MB avevano un transfer/rate di 1.3MB/sec oramai sono arrivati a velocità come 5MB/sec diventando cosi uno dei formati più veloci</span></span></div>
<div class="thumb tright"><span class="mw-headline"><span class="usualtext"><span style="font-family:Tahoma;"><span style="font-size:x-small;"><strong>Chiave USB</strong>, o P<strong>enna USB</strong>, o P<strong>endrive</strong></span></span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Una <strong>chiave USB</strong>, o <strong>penna USB</strong>, o <strong>pendrive</strong>, è una </span><a title="Memoria di massa" href="http://it.wikipedia.org/wiki/Memoria_di_massa"><span style="font-size:x-small;font-family:Tahoma;">memoria di massa</span></a><span style="font-size:x-small;font-family:Tahoma;"> portatile di dimensioni molto contenute (qualche centimetro in lunghezza e intorno al centimetro in larghezza) che si collega al </span><a title="Computer" href="http://it.wikipedia.org/wiki/Computer"><span style="font-size:x-small;font-family:Tahoma;">computer</span></a><span style="font-size:x-small;font-family:Tahoma;"> mediante la comune </span><a title="Porta" href="http://it.wikipedia.org/wiki/Porta"><span style="font-size:x-small;font-family:Tahoma;">porta</span></a><span style="font-size:x-small;font-family:Tahoma;"> </span><a title="Universal Serial Bus" href="http://it.wikipedia.org/wiki/Universal_Serial_Bus"><span style="font-size:x-small;font-family:Tahoma;">USB</span></a><span style="font-size:x-small;font-family:Tahoma;">.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Nella chiave USB i dati sono memorizzati in una </span><a title="Memoria flash" href="http://it.wikipedia.org/wiki/Memoria_flash"><span style="font-size:x-small;font-family:Tahoma;">memoria flash</span></a><span style="font-size:x-small;font-family:Tahoma;">, tipicamente di tipo </span><a title="NAND" href="http://it.wikipedia.org/wiki/NAND"><span style="font-size:x-small;font-family:Tahoma;">NAND</span></a><span style="font-size:x-small;font-family:Tahoma;">, contenuta al suo interno. Attualmente la capacità di memoria delle chiavi USB va da 512 megabyte in su. La capacità è limitata unicamente dalla densità delle memorie flash impiegate, con il costo per megabyte che aumenta rapidamente per alte capacità.</span></span></p>
<p><span class="usualtext"><a id="Funzionamento" name="Funzionamento"></a></span></p>
<h2><span class="mw-headline"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Funzionamento</span></span></span></h2>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Il </span><a title="Protocollo di rete" href="http://it.wikipedia.org/wiki/Protocollo_di_rete"><span style="font-size:x-small;font-family:Tahoma;">protocollo</span></a><span style="font-size:x-small;font-family:Tahoma;"> per il trasferimento dei dati dal computer alla chiavetta, e viceversa, è un protocollo </span><a title="Standard" href="http://it.wikipedia.org/wiki/Standard"><span style="font-size:x-small;font-family:Tahoma;">standard</span></a><span style="font-size:x-small;font-family:Tahoma;"> denominato </span><a title="Universal Serial Bus" href="http://it.wikipedia.org/wiki/Universal_Serial_Bus"><span style="font-size:x-small;font-family:Tahoma;">USB Mass Storage protocol</span></a><span style="font-size:x-small;font-family:Tahoma;">. Tale standardizzazione ha incoraggiato l&#8217;inclusione dei driver di supporto e di inclusione nel </span><a title="File system" href="http://it.wikipedia.org/wiki/File_system"><span style="font-size:x-small;font-family:Tahoma;">file system</span></a><span style="font-size:x-small;font-family:Tahoma;"> locale da parte dei produttori di </span><a title="Sistema operativo" href="http://it.wikipedia.org/wiki/Sistema_operativo"><span style="font-size:x-small;font-family:Tahoma;">sistemi operativi</span></a><span style="font-size:x-small;font-family:Tahoma;"> quali </span><a class="mw-redirect" title="Windows" href="http://it.wikipedia.org/wiki/Windows"><span style="font-size:x-small;font-family:Tahoma;">Windows</span></a><span style="font-size:x-small;font-family:Tahoma;">, </span><a title="Mac OS X" href="http://it.wikipedia.org/wiki/Mac_OS_X"><span style="font-size:x-small;font-family:Tahoma;">Mac OS X</span></a><span style="font-size:x-small;font-family:Tahoma;"> e </span><a title="Linux" href="http://it.wikipedia.org/wiki/Linux"><span style="font-size:x-small;font-family:Tahoma;">Linux</span></a><span style="font-size:x-small;font-family:Tahoma;">.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Inizialmente la velocità di lettura/scrittura della memoria flash contenuta nella chiavette era molto bassa, &#8220;frenata&#8221; proprio dalla ridotta banda passante dell&#8217;interfaccia USB, che nella sua versione originale, la 1.1, è di 12 Mbit/s. Recentemente invece quasi tutte le chiavette di nuova costruzione utilizzano la più veloce versione 2.0, perfettamente retrocompatibile con la versione 1.1, e dotata di una banda passante di 480 Mbit/s.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">È da precisare però che la velocità di scrittura non dipende solo dall&#8217;interfaccia utilizzata, ma anche dal tipo di memoria flash utilizzata, e dalla eventuale presenza di microchip dedicati all&#8217;interno della chiavetta stessa. Esistono a questo proposito in commercio alcune chiavette che contengono un piccolo </span><a title="Microprocessore" href="http://it.wikipedia.org/wiki/Microprocessore"><span style="font-size:x-small;font-family:Tahoma;">microprocessore</span></a><span style="font-size:x-small;font-family:Tahoma;"> dedicato ad ottimizzare il processo di lettura/scrittura sulla memoria flash. Ovviamente la maggiore complessità di queste soluzioni relegano per il momento questi &#8220;bolidi&#8221; ad un mercato professionale di fascia alta con esigenze specifiche.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Grazie alle dimensioni ridotte, all&#8217;assenza di meccanismi mobili (al contrario degli </span><a class="mw-redirect" title="Hard disk" href="http://it.wikipedia.org/wiki/Hard_disk"><span style="font-size:x-small;font-family:Tahoma;">hard disk</span></a><span style="font-size:x-small;font-family:Tahoma;"> comuni) che lo rende molto resistente, alle sempre crescenti dimensioni della memoria e alla sua </span><a title="Interoperabilità" href="http://it.wikipedia.org/wiki/Interoperabilit%C3%A0"><span style="font-size:x-small;font-family:Tahoma;">interoperabilità</span></a><span style="font-size:x-small;font-family:Tahoma;"> la chiavetta si sta configurando, accanto ai </span><a title="CD" href="http://it.wikipedia.org/wiki/CD"><span style="font-size:x-small;font-family:Tahoma;">CD</span></a><span style="font-size:x-small;font-family:Tahoma;"> e ai </span><a title="DVD" href="http://it.wikipedia.org/wiki/DVD"><span style="font-size:x-small;font-family:Tahoma;">DVD</span></a><span style="font-size:x-small;font-family:Tahoma;"> come unità preferita da un crescente numero di consumatori per il trasporto fisico di dati. Si tenga inoltre in considerazione il fatto che il numero di scritture che una </span><a title="Memoria flash" href="http://it.wikipedia.org/wiki/Memoria_flash"><span style="font-size:x-small;font-family:Tahoma;">memoria flash</span></a><span style="font-size:x-small;font-family:Tahoma;"> può supportare non è illimitato, seppur molto alto (oltre 100.000 cicli di scrittura).</span></span></p>
<p><span class="usualtext"><a id="Pro_e_contro" name="Pro_e_contro"></a></span></p>
<h2><span class="mw-headline"><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Pro e contro</span></span></span></h2>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Nel download o upload di dati la chiavetta USB è il supporto con il minore ingombro (sta in tasca) più veloce: supera in velocità di lettura e scrittura i </span><a class="mw-redirect" title="CD-ROM" href="http://it.wikipedia.org/wiki/CD-ROM"><span style="font-size:x-small;font-family:Tahoma;">CD-ROM</span></a><span style="font-size:x-small;font-family:Tahoma;"> e </span><a class="mw-redirect" title="DVD-ROM" href="http://it.wikipedia.org/wiki/DVD-ROM"><span style="font-size:x-small;font-family:Tahoma;">DVD-ROM</span></a><span style="font-size:x-small;font-family:Tahoma;">, ma è più lento delle componenti interne del computer (memoria </span><a title="Cache" href="http://it.wikipedia.org/wiki/Cache"><span style="font-size:x-small;font-family:Tahoma;">cache</span></a><span style="font-size:x-small;font-family:Tahoma;">, </span><a class="mw-redirect" title="RAM" href="http://it.wikipedia.org/wiki/RAM"><span style="font-size:x-small;font-family:Tahoma;">RAM</span></a><span style="font-size:x-small;font-family:Tahoma;"> e </span><a class="mw-redirect" title="Hard Disk" href="http://it.wikipedia.org/wiki/Hard_Disk"><span style="font-size:x-small;font-family:Tahoma;">Hard Disk</span></a><span style="font-size:x-small;font-family:Tahoma;">). Attualmente sono in commercio chiavette USB da 32 GB e sono state testate (Aprile 2008) altre da 64 Gb.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Altro vantaggio è la sua versatilità, tutti i sistemi operativi moderni infatti non richiedono l&#8217;installazione di </span><a title="Driver" href="http://it.wikipedia.org/wiki/Driver"><span style="font-size:x-small;font-family:Tahoma;">driver</span></a><span style="font-size:x-small;font-family:Tahoma;"> per riconoscere le chiavi USB.</span></span></p>
<p><span class="usualtext"><span style="font-size:x-small;font-family:Tahoma;">Un aspetto negativo è il fatto che dopo un lungo periodo di utilizzo, la memoria presente nella chiavetta si riduce gradualmente. In questo caso basta </span><a class="mw-redirect" title="Formattare" href="http://it.wikipedia.org/wiki/Formattare"><span style="font-size:x-small;font-family:Tahoma;">formattare</span></a><span style="font-size:x-small;font-family:Tahoma;"> la chiavetta per riavere a disposizione lo spazio originario.</span></span></p>
<p><span class="url"><span class="usualtext"><strong>it.wikipedia.org</strong>/wiki/Periferica</span></span></p>
<p><span class="url"><span class="usualtext"><strong>assistenzafree.com</strong>/&#8230;/disinstallare-<strong>periferiche</strong>-inesistenti.html<br />
</span></span></p>
<p><span class="url"><span class="usualtext">http://www.infinito.it/homepage</span></span></p>
<p><span class="url"><span class="usualtext">http://www.dbannunci.it/?catid=49</span></span></p>
<p><span class="url"><span class="usualtext"><strong>trucchi.swzone.it</strong>/swztips.php?action=tips&#38;id=260</span></span></p>
<p><span class="url"><span class="usualtext">www.<strong>ciao.it</strong>/<strong>Periferiche</strong>_178035_2</span></span><span class="usualtext"> &#8211; <em>52k</em></span></p>
<p><span class="url"><span class="usualtext">www.<strong>freeshop.sm</strong>/Memory_<strong>card</strong>-905.htm</span></span></p>
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<title><![CDATA[Clone in a Silo]]></title>
<link>http://deadbirdflirting.wordpress.com/2008/07/30/clone-in-a-silo/</link>
<pubDate>Wed, 30 Jul 2008 15:30:14 +0000</pubDate>
<dc:creator>deadbirdflirting</dc:creator>
<guid>http://deadbirdflirting.wordpress.com/2008/07/30/clone-in-a-silo/</guid>
<description><![CDATA[My name is Clone and I am 15 years old, I&#8217;ve been living in this silo for 6 six years now. I f]]></description>
<content:encoded><![CDATA[My name is Clone and I am 15 years old, I&#8217;ve been living in this silo for 6 six years now. I f]]></content:encoded>
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