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Casio 121-A (121A)

The Casio 121-A is an arithmetic calculator with 12 digits precision and algebraic logic. It has 4 functions, 15 keys, and a display using Nixie tubes. The power source is Solar. Note: Desktop model.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions4
Keys15
Precision12
LogicAlgebraic
Display typeNixie
Length127mm
Width330mm
Thickness102mm
Power SourceSolar
Year introduced1970
Year discontinued1971

Replacements:

If you have a Casio 121-A 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 Casio