Grant Stockly has announced the culmination of an ambitious project to create perfect replicas of the infamous Altair 8800 -- widely considered to have officially kicked off the home computer revolution with the 1975 advertisement for the kit in Popular Electronics and relative buying spree it elicited. It's a switch-based computer with no display other than LED lights -- all programming was done by flipping switches on the front panel, with the big advantage being that you were programming the system about as directly as possible. Of course it established what came to be known as the S-100 bus (for expansion cards with 100 pin connectors) that could greatly expand the system's capabilities, from alternate input and output methods to various storage and subsequent OS integration (most popularly, CP/M). The S-100 bus standard lasted from the mid-1970's through to the early 1980's when more user friendly systems began to become more prevalent and powerful. Of course the Altair 8800 also begat many clones, including the more capable IMSAI 8080, released only about six months later and featured (in a greatly expanded form) in the popular 1983 movie, War Games, starring Matthew Broderick.