Many people don't know the history of the Kenbak-1 Digital Computer, but it's considered to be the world's first commercially available personal computer, and one is going up for sale in just a few minutes. [...] It didn't have a microprocessor at all, and contained only 256 bytes (you read that correctly) of RAM. No more than 50 units were ever made, although a few have been popping up for sale in the last few years. ...