Intel 4004

The Intel 4004, a 4-bit CPU, was the world's first single-chip microprocessor, as well as the first commercial one. At about the same time, some other integrated circuit CPU designs, such as the military F14 CADC of 1970, were implemented as chipsets, i.e. multiple-chip constellations.

Related Topics:
4-bit - CPU - Chip - Microprocessor - F14 CADC - Chipset

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The 4004 was released in 16-pin CERDIP packaging on November 15th, 1971. The 4004 was the first computer processor designed and manufactured by chip maker Intel, which previously made semiconductor memory chips. The chief designers of the chip were Ted Hoff and Federico Faggin of Intel and Masatoshi Shima of Busicom (later of ZiLOG).

Related Topics:
CERDIP - November 15th - 1971 - Chip - Intel - Semiconductor - Ted Hoff - Federico Faggin - Masatoshi Shima - ZiLOG

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Originally designed for the Japanese company Busicom to be used in their line of calculators, the 4004 was also provided with a family of custom support chips (e.g., each "Program ROM" internally latched for its own use the 4004's 12-bit program address, which allowed 4 KB memory access from the 4-bit address bus if all 16 ROMs were installed). The 4004 circuit was built of 2,300 transistors, and was followed the next year by the first ever 8-bit microprocessor, the 3,300 transistor 8008 (and the 4040, a revised 4004).

Related Topics:
Japanese - Busicom - Calculator - ROM - KB - Address bus - Transistor - 8-bit - 8008 - 4040

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As its fourth entry in the microprocessor market, Intel released the CPU that started the microcomputer revolution — the 8080.

Related Topics:
Microcomputer - 8080

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