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Omron 81M

The Omron 81M is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 22 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA sealed.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions4
Keys22
Precision8
LogicAlgebraic
Display typeVFD
Length152mm
Width102mm
Power Source4xAA sealed
Year introduced1974
Year discontinued1974

Replacements:

If you have an Omron 81M that is no longer working, you can first try replacing the 4xAA sealed 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 Omron