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The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. Sold for US$60 (equivalent to $450 in 2023 [ 2 ] ), it was the first commercially produced microprocessor , [ 3 ] and the first in a long line of Intel CPUs .
Intel 4004 architecture: Date: 21 October 2007: Source: Own work: Author: Appaloosa . This W3C-unspecified vector image was created with Inkscape. Licensing.
The first commercial microprocessor was the binary-coded decimal (BCD-based) Intel 4004, [2] [3] developed for calculator applications in 1971; it had a 4-bit word length, but had 8-bit instructions and 12-bit addresses. It was succeeded by the Intel 4040, which added interrupt support and a variety of other new features.
Intel's 4004 of 1971 is widely regarded as the first commercial microprocessor. [2] Designers predominantly used MOSFET transistors with pMOS logic in the early 1970s
[13] 4-phase logic was also considered for use in the Intel 4004, but only Rockwell had the design tools and expertise to do large scale 4-phase ICs at that time so Intel settled on 2-phase dynamic logic instead. [14]
Intel Haswell Core i7-4771 CPU, sitting atop its original packaging that contains an OEM fan-cooled heatsink. This generational list of Intel processors attempts to present all of Intel's processors from the 4-bit 4004 (1971) to the present high-end offerings.
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The Z80 was the brainchild of Federico Faggin, a key figure behind the creation of the Intel 8080. After leaving Intel in 1974, Faggin co-founded Zilog with Ralph Ungermann. The Z80 was released in July 1976. With the revenue from the Z80, the company built its own chip factories. [4]