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Adler 121C (EC29)

The Adler 121C is an arithmetic calculator with 12 digits precision and algebraic logic. It has 9 functions, 25 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions9
Keys25
Precision12
LogicAlgebraic
Display typeVFD
Length150mm
Width87mm
Thickness26mm
Weight165g
Power Source4xAA
Year introduced1975
Year discontinued1975

Replacements:

If you have an Adler 121C that is no longer working, you can first try replacing the 4xAA 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 Adler