Early Personal Computers  1970's Ed Roberts: MITS Altair computer (1974) Bill Millard: IMSAI 8080 (1974) Radio Shack: TRS-80 (1977) Steve Wozniak and Steve Jobs: The Apple I and II Computer (1976)   Altair MITS, http://www.digitalcentury.com/encyclo/update/mits.html Wei-Ting Jou