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Casio FT-21

The Casio FT-21 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 11 functions, 28 keys, and an LCD (liquid crystal) display. The power source is 3V cell. Note: Available in pink and blue

Facts at a glance:

FeatureValue
TypeArithmetic
Functions11
Keys28
Precision8
LogicAlgebraic
Display typeLCD
Length92mm
Width59mm
Thickness7mm
Weight41g
Power Consumption0.002300W
Power Source3V cell
Year introduced1981
Year discontinued1981

Replacements:

If you have a Casio FT-21 that is no longer working, you can first try replacing the 3V cell battery. 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 Casio