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Unisonic 790R

Unisonic 790R
Image: wass.net used with permission

The Unisonic 790R is an arithmetic calculator with 8 digits precision and algebraic logic. It has 8 functions, 25 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions8
Keys25
Precision8
LogicAlgebraic
Display typeVFD
Length154mm
Width91mm
Thickness36mm
Power Source4xAA
Year introduced1975

Replacements:

If you have a Unisonic 790R 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