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Triumph 81S (EC24A)

The Triumph 81S is an arithmetic calculator with 8 digits precision and algebraic logic. It has 9 functions, 27 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAAA. Note: Adler 81S

Facts at a glance:

FeatureValue
TypeArithmetic
Functions9
Keys27
Precision8
LogicAlgebraic
Display typeVFD
Length120mm
Width75mm
Thickness20mm
Weight104g
Power Source4xAAA
Year introduced1975
Year discontinued1976

Replacements:

If you have a Triumph 81S 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 Triumph