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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 .
English: Pinout diagram of the Intel 4004 microprocessor. Date: 20 November 2009, 22:58 (UTC) Source: 4004_dil.png; Author: 4004_dil.png: Appaloosa 16:29, 16 November ...
Intel 4040 DIP chip pinout. The 4040 was essentially an expansion of the 4004, with additional pins, more registers and new instructions to take advantage of both. The 4004 had a single ROM pin, whereas the 4040 added another ROM pin to allow two banks of ROM. This effectively increased the ROM address from 12 to 13 bits, or 8 kB.
Intel introduced its first PMOS microprocessor, the Intel 4004, in 1971. A number of companies followed Intel's lead. Most early microprocessors were manufactured in PMOS technology: 4040 and 8008 from Intel; IMP-16, PACE and SC/MP from National Semiconductor; TMS1000 from Texas Instruments; PPS-4 [13] and PPS-8 [14] from Rockwell International.
The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...
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]
The 4004 was designed for Busicom, which had earlier proposed a multi-chip design in 1969, before Faggin's team at Intel changed it into a new single-chip design. The 4-bit Intel 4004 was soon followed by the 8-bit Intel 8008 in 1972.
A very early CD4029A counter IC, in 16-pin ceramic dual in-line package (DIP-16), manufactured by RCA Colorized IC die and schematics of CD4011BE NAND gateThe 4000 series was introduced as the CD4000 COS/MOS series in 1968 by RCA [1] as a lower power and more versatile alternative to the 7400 series of transistor-transistor logic (TTL) chips.