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National Semiconductor 600

National Semiconductor 600
Image: Joe Haupt, CC BY-SA 2.0

The National Semiconductor 600 is an arithmetic calculator with 6 digits precision and RPN (reverse polish notation) logic. It has 4 functions, 15 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions4
Keys15
Precision6
LogicRPN
Display typeLED
Length130mm
Width70mm
Thickness24mm
Weight78g
Power SourcePP3 9V
Year introduced1973

Replacements:

If you have a National Semiconductor 600 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.

We suggest the following current model as a replacement:

See other calculators by National Semiconductor