The AMD Am2901 is a 4-bit CPU slice monolithic integrated circuit. The Am2901 combines a 4-bit ALU slice with sixteen 16 4-bit processor register slices. It implements arithmetic, binary, and bit-shifting operations.

The 2901 and some other chips in the family were second sourced by other manufacturers such as Motorola, Raytheon, Cypress Semiconductor, National Semiconductor, NEC, Thomson, and Signetics.

In the Soviet Union, the Am2900 family was manufactured as the 1804 series, with the Am2901 designated as КР1804ВС1 (transliterated: KR1804VS1).

Used in

Some instruments using part Am2901

Instrument Manufacturer Class Model Description Introduced
4052 Tektronix Computer 4052 Graphics-capable desktop microcomputer 1978
7912AD Tektronix Oscilloscope 7912AD 500 MHz digitizer 1978

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