The Altair 8800 debuted in 1975, and other companies soon began to imitate it, right down to its 100-pin expansion bus. Later dubbed S-100, the bus became the basis of the first personal computer ...

By Shantanu Dhavale, Altera Corp. Programmable Logic Design Line Expansion buses are connections that allow peripheral controllers to use system resources, such as hard disks, memory and I/O space, ...