On: Old Calculator Web Museum

[jacquesm]

It's an interesting historical fact that the modern CPU was invented specifically to power a desk calculator.

https://en.wikipedia.org/wiki/Intel_4004

There is a direct line back from the Intel x86 architecture all the way back to that 4004.

Another neat little item in the same line:

http://curta.org/

I've been on the lookout for an affordable one for the longest time but so far no luck.