Central processing unit

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TMS9900.jpg
Central processing unit
Manufacturervarious
Release1948-present

A central processing unit, CPU, central processor, or main processor is electronic circuitry in a computer that executes instructions in a stored program.

History

It was first used in computers beginning with the invention of program storage in 1948

8-bit CPUs owned by WEC Museum

Title Developer Release Added to museum Notes
Z80 Zilog 1976 GG: December 25, 1991 Z80 is used in Game Gear, Master System, MSX, MSX2, MSX2+, Nintendo arcade games, and PlayChoice-10.
Z80A is used in Amstrad CPC and ZX Spectrum.

16-bit CPUs owned by WEC Museum

Title Developer Release Added to museum Notes
TMS9900 Texas Instruments 1979 TI-99/4A: February 3, 2020 Used in the TI-99/4 series.

32-bit CPUs owned by WEC Museum

Title Developer Release Added to museum Notes
Pentium Intel 1993 May 8, 2020 The WEC Museum owns a 133Mhz Pentium in an IBM AT 5170 case.