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Royal Digital VIII-K (UA785)

The Royal Digital VIII-K is an arithmetic calculator with algebraic logic. It has a VFD (vacuum fluorescent) display. The power source is 4xAA batteries.

Facts at a glance:

FeatureValue
TypeArithmetic
LogicAlgebraic
Display typeVFD
Length159mm
Width90mm
Power Source4xAA batteries
Year introduced1974

Replacements:

If you have a Royal Digital VIII-K 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 Royal