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Unisonic 811

The Unisonic 811 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys20
Precision8
LogicAlgebraic
Display typeVFD
Length134mm
Width82mm
Thickness30mm
Weight132g
Power Consumption0.400000W
Power Source4xAAA
Year introduced1976
Year discontinued1976

Replacements:

If you have a Unisonic 811 that is no longer working, you can first try replacing the 4xAAA 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