This is just information. I completed a reference tool that accomplishes most of this for computers built between 1950 and 1979. It's called Domestic Commercial Computing Power Between 1950 & 1979 (DCCP). It doesn't include statistical data, but it does list every make and model of computers built or sold by North American computer companies. It was self-published, but you'll find reviews in upcoming issues of the Annals, Analytical Engine, and the CBI newsletter. It's not available on the web and I have no plans for that, but I am trying to make a CD version that would include photographs, commercials/promotional video clips, sales literature, etc. We could use a similar tool for the years 1980 onwards for commercially available computers, but also for military computers, industrial control computers, programmable communication controllers, etc. Yours in good faith. Kevin Stumpf ------------------------------------- I'm working on my signature file.