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Casio fx-31

Casio fx-31

The Casio fx-31 is a scientific calculator with 8 digits precision and algebraic logic. It has 27 functions, 35 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA. The calculator was manufactured in Japan. Note: First calculator bought at university A sample of this calculator is held in the calculator.org collection.

Facts at a glance:

FeatureValue
TypeScientific
Functions27
Keys35
Precision8
LogicAlgebraic
Display typeVFD
Length145mm
Width84mm
Thickness25mm
Weight132g
Power Consumption0.250000W
Power Source2xAA
CountryJapan
Year introduced1978
Year discontinued1980

Replacements:

If you have a Casio fx-31 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