Science & technology

Microprocessor

1971

A microprocessor is a computer's central processing unit built on a single integrated-circuit chip. The first commercially available one was the Intel 4004, released in 1971, which was developed for a Japanese calculator company, Busicom. It was designed by a team that included Federico Faggin, Ted Hoff, Stanley Mazor and Masatoshi Shima, and was a four-bit processor with about 2,300 transistors. It was followed by the 8008 and the more successful 8080, and by competing designs from Motorola and others. By packing the processing power of a room-size computer into a small chip, microprocessors made possible the personal computer in the 1970s and later the many embedded devices that now run in cars, phones and appliances.

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