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Compex SR-55

The Compex SR-55 is a scientific calculator with 9 digits precision and algebraic logic. It has 22 functions, 36 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAA.

Facts at a glance:

FeatureValue
TypeScientific
Functions22
Keys36
Precision9
LogicAlgebraic
Display typeVFD
Power Consumption0.450000W
Power Source3xAA
Year introduced1976
Year discontinued1976

Replacements:

If you have a Compex SR-55 that is no longer working, you can first try replacing the 3xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Compex