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Triumph sir SR (EC 20-S)

The Triumph sir SR is a scientific calculator with 8 digits precision and algebraic logic. It has 16 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA. Note: Adler Sir SR

Facts at a glance:

FeatureValue
TypeScientific
Functions16
Keys19
Precision8
LogicAlgebraic
Display typeVFD
Power Source3xAAA
Year introduced1975

Replacements:

If you have a Triumph sir SR that is no longer working, you can first try replacing the 3xAAA 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 Triumph