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Silver-Reed SR 81

The Silver-Reed SR 81 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 23 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions7
Keys23
Precision8
LogicAlgebraic
Display typeVFD
Length155mm
Width85mm
Thickness36mm
Power Consumption0.300000W
Power Source2xAA
Year introduced1975
Year discontinued1978

Replacements:

If you have a Silver-Reed SR 81 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 models as possible replacements:

See other calculators by Silver-Reed