C-3 and I-400 were the designations for a class of submarines built by the Japanese during World War Two. The 1-400 was an underwater aircraft carrier! 492 more words
Tags » Enigma-machine
Murlyn Hakon of Bletchley Park explains how the Enigma Machine worked.
The remarkable thing about Enigma, is that when you press a letter on the keyboard and the subsequent enciphered letter lights up to the rear of the machine, the chances of that letter lighting up are nearly 158 million million million to 1.