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The '''National MAPS''' ('''''M'''icroprogrammable '''A'''rithmetic '''P'''rocessor '''S'''ystem'') or '''National MM570X''' was a bit-serial [[4-bit architecture|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{{date off}} but was quickly replaced within a year.  
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The '''National MAPS''' ('''''M'''icroprogrammable '''A'''rithmetic '''P'''rocessor '''S'''ystem'') or '''National MM570X''' was a bit-serial [[microcontroller]] system made of 5 discrete chips designed by [[National Semiconductor]]. The system can be programmed to operate in binary or BCD up to a 76 bit one cycle data word.The chipset was marketed as a general purpose serieal data microcomputer system. The chipset was introduced in late 1971{{date off}} but was quickly replaced within a year.  
  
 
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Revision as of 16:00, 28 January 2016

Not to be confused with National MM5700 Series.

The National MAPS (Microprogrammable Arithmetic Processor System) or National MM570X was a bit-serial microcontroller system made of 5 discrete chips designed by National Semiconductor. The system can be programmed to operate in binary or BCD up to a 76 bit one cycle data word.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

  • MM5700

  • MM5701

  • MM5702

  • MM5703

  • MM5704

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