- Not to be confused with National MAPS (MM570X Series).
The National MM5700 or National MM57XX series a family of 4-bit calculator chips designed by National Semiconductor. The chips were made using PMOS technology, most designed for 9V battery, had an a very limited set of math operations - some only as few as addition, subtraction, multiplication, and division. These chips were made as part of National attempt to enter the ultra-low-end calculator market.
|MM5734||8-function accumulator calculator|
|MM5737||8-digit, 4-function floating point calculator|
|MM5760||Slide Rule Calculator|
|MM5767||Slide Rule Calculator|
|MM5777||6-digit, 4-function, floating point calculator|
|MM5780||Educational toy calculator|
|MM5791||8-function accumulator calculator|
|MM5794||8-function accumulator VFD calculator|
|MM5795||8-function accumulator VFD calculator|
|MM57103||Scientific Calculator Circuit|
|MM57104||Scientific Calculator Circuit|
|MM57123||Scientific Calculator ROM|
|MM57136||RPN Scientific calculator control ROM|
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