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Unitrex 901M

Unitrex 901M
Image: Joe Haupt, CC BY-SA 2.0

The Unitrex 901M is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 22 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys22
Precision8
LogicAlgebraic
Display typeVFD
Length140mm
Width83mm
Power Source2xAA
Year introduced1975

Replacements:

If you have a Unitrex 901M that is no longer working, you can first try replacing the 2xAA 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 Unitrex