In 1971 Intel Corporation
released the Intel 4004 central processing unit. It was a 4-bit CPU
and the first complete CPU on one chip. The integration was made
possible by the use of then-new silicon gate technology allowing a
higher number of transistors and a faster speed than was possible
before.
The 4004 was the first
commercially available computer processor designed and manufactured
by chip maker Intel, which had previously made semiconductor memory
chips. The chief designers of the chip were Federico Faggin and Ted
Hoff of Intel, and Masatoshi Shima of Busicom.
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| Busicom calculator 141-PF |
The 4004 had a maximum
clock speed of 740 kHz. The first commercial product to use a 4004
microprocessor was the Busicom calculator 141-PF.
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| Intel 1971 ad |
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