The APF MARK 22 is a scientific calculator with 8 digits precision and algebraic logic. It has 17 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 17
Keys: 19
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 159mm
Width: 76mm
Power Source: Sealed battery pack
Year introduced: 1977

See other calculators by APF