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National Semiconductor 500 (NS500)

National Semiconductor 500
Image: Joe Haupt, CC BY-SA 2.0

The National Semiconductor 500 is an arithmetic calculator with 12 digits precision and algebraic logic. It has 5 functions, 26 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA sealed.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys26
Precision12
LogicAlgebraic
Display typeVFD
PrinterYes
Length168mm
Width72mm
Thickness37mm
Power Consumption2.500000W
Power Source4xAA sealed
Year introduced1979
Year discontinued1981

Replacements:

If you have a National Semiconductor 500 that is no longer working, you can first try replacing the 4xAA sealed batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.

We suggest the following current models as possible replacements:

See other calculators by National Semiconductor