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Adler 81SN (EC63)

The Adler 81SN is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 27 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys27
Precision8
LogicAlgebraic
Display typeVFD
Length135mm
Width74mm
Thickness15mm
Weight90g
Power Source3xAAA
Year introduced1978
Year discontinued1978

Replacements:

If you have an Adler 81SN 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 models as possible replacements:

See other calculators by Adler