calculator.org

the calculator home page

APF MARK 90

The APF MARK 90 is a programmable calculator with 8 digits precision and algebraic logic. It has 45 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xSealed.

Facts at a glance:

FeatureValue
TypeProgrammable
Keys45
Precision8
LogicAlgebraic
Display typeLED
Length152mm
Width76mm
Thickness25mm
Power Source3xSealed
Year introduced1977

Replacements:

If you have an APF MARK 90 that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by APF