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Unisonic 811-C

The Unisonic 811-C is an arithmetic calculator with algebraic logic. It has 6 functions, 19 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4xAAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys19
LogicAlgebraic
Display typeLED
Length127mm
Width76mm
Power Consumption0.300000W
Power Source4xAAA
Year introduced1975

Replacements:

If you have a Unisonic 811-C 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