I’ve got a few more thoughts about calculating logarithms, based on how the Harvard IBM Automatic Sequence-Controlled Calculator did things, and wanted to share them. I also have some further thoughts coming up shortly courtesy my first guest blogger, which is exciting to me. 961 more words

## Tags » Numerical Mathematics

#### Machines That Give You Logarithms

As I’ve laid out the tools that the Harvard IBM Automatic Sequence-Controlled Calculator would use to work out a common logarithm, now I can show how this computer of the 1940s and 1950s would do it. 1,388 more words

#### Machines That Do Something About Logarithms

I’m going to assume everyone reading this accepts that logarithms are worth computing, and try to describe how Harvard’s IBM Automatic Sequence-Controlled Calculator would work them out. 799 more words

#### Machines That Think About Logarithms

I confess that I picked up Edmund Callis Berkeley’s **Giant Brains: Or Machines That Think**, originally published 1949, from the library shelf as a source of cheap ironic giggles. 873 more words

#### Writing About E (Not By Me)

It’s tricky to write about . That is, it’s not a difficult thing to write about, but it’s hard to find the audience for this number. 206 more words

#### Combining Matrices And Model Universes

I would like to resume talking about matrices and really old universes and the way nucleosynthesis in these model universes causes atoms to keep settling down to peculiar but unchanging distribution. 1,618 more words

#### Lewis Carroll and my Playing With Universes

I wanted to explain what’s going on that my little toy universes with three kinds of elements changing to one another keep settling down to steady and unchanging distributions of stuff. 980 more words