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Keystone SC 654

The Keystone SC 654 is an arithmetic calculator with algebraic logic. It has a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Facts at a glance:

FeatureValue
TypeArithmetic
LogicAlgebraic
Display typeVFD
Length152mm
Width81mm
Power SourceSealed battery pack
Year introduced1975

Replacements:

If you have a Keystone SC 654 that is no longer working, you can consider replacing the calculator with a modern equivalent.

We suggest the following current models as possible replacements:

See other calculators by Keystone