Description
The APF MARK 28 is an arithmetic calculator with unknown digits precision and algebraic logic. It has an unknown number of functions, unknown keys and a VFD (vacuum fluorescent) display. The power source is PP3 9V.
The APF MARK 28 is an arithmetic calculator with unknown digits precision and algebraic logic. It has an unknown number of functions, unknown keys and a VFD (vacuum fluorescent) display. The power source is PP3 9V.