calculator.org

the calculator home page

Unisonic 931-B

The Unisonic 931-B is an arithmetic calculator with algebraic logic. It has 6 functions, and a VFD (vacuum fluorescent) display. The power source is 3xAAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
LogicAlgebraic
Display typeVFD
Length95mm
Width64mm
Power Source3xAAA
Year introduced1975

Replacements:

If you have a Unisonic 931-B that is no longer working, you can first try replacing the 3xAAA batteries. 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 Unisonic