The APF MARK 64 is an arithmetic calculator with algebraic logic. It has 8 functions, 19 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 8
Keys: 19
Logic: Algebraic
Display type: LED
Length: 127mm
Width: 64mm
Power Source: PP3 9V
Year introduced: 1975

See other calculators by APF