There's a long list of precursors at http://en.wikipedia.org/wiki/History_of_personal_computers#The_beginnings_of_the_personal_computer_industry http://en.wikip

There's a long list of precursors at http://en.wikipedia.org/wiki/History_of_personal_computers#The_beginnings_of_the_personal_computer_industry http://en.wikipedia.org/wiki/History_of_personal_computers#T... , including the Kenbak-1, which "is considered by the Computer History Museum to be the world's first personal computer." It was designed in 1970, and first sold in early 1971, so several years before the MCM/70.