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National Semiconductor 99

The National Semiconductor 99 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 25 keys, and an LCD (liquid crystal) display. Note: Sears 2000

Facts at a glance:

FeatureValue
TypeArithmetic
Functions7
Keys25
Precision8
LogicAlgebraic
Display typeLCD
Year introduced1978

Replacements:

If you have a National Semiconductor 99 that is no longer working, 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