Not to be confused with National MM5700 Series.

The National MAPS (Microprogrammable Arithmetic Processor System) or National MM570X was a bit-serial 4-bit microcontroller system made of 5 discrete chips designed by National Semiconductor. The chipset was marketed as a general purpose serieal data microcomputer system. The chipset was introduced in late 1971^[off?] but was quickly replaced within a year.

Family Members
Part	Description
MM5700	ALU
MM5701	Register unit
MM5702	Clock and Control unit
MM5703	Control ROM (extension)
MM5704	Keyboard interface unit
MM5705	Control ROM
MM5706	Static Data Monitor

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