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Olympia OP644

The Olympia OP644 is a programmable calculator with 12 digits precision and algebraic logic. It has 54 keys, and an LCD (liquid crystal) display. The power source is 2x3V cell + sealed battery. The calculator was manufactured in Japan. Note: Casio PB-300

Facts at a glance:

FeatureValue
TypeProgrammable
Keys54
Precision12
LogicAlgebraic
Display typeLCD
PrinterYes
Length90mm
Width173mm
Thickness20mm
Weight258g
Power Consumption4.100000W
Power Source2x3V cell + sealed battery
CountryJapan
Year introduced1983
Year discontinued1983

Replacements:

If you have an Olympia OP644 that is no longer working, you can first try replacing the 2x3V cell + sealed battery batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Olympia