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Casio fx-81

The Casio fx-81 is a scientific calculator with 9 digits precision and algebraic logic. It has 32 functions, 38 keys, and an LCD (liquid crystal) display. The power source is 2xAA.

Facts at a glance:

FeatureValue
TypeScientific
Functions32
Keys38
Precision9
LogicAlgebraic
Display typeLCD
Length149mm
Width76mm
Thickness18mm
Power Source2xAA
Year introduced1985

Replacements:

If you have a Casio fx-81 that is no longer working, you can first try replacing the 2xAA batteries. 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 Casio