calculator.org

the calculator home page

Unisonic 890-A

The Unisonic 890-A is an arithmetic calculator with algebraic logic. It has 5 functions, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
LogicAlgebraic
Display typeVFD
Length152mm
Width89mm
Power Source4xAA
Year introduced1975

Replacements:

If you have a Unisonic 890-A 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 Unisonic