National Semiconductor 850A

National Semiconductor 850A
Image: Joe Haupt, CC BY-SA 2.0
The National Semiconductor 850A is an arithmetic calculator with algebraic logic. It has 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
Logic: Algebraic
Display type: LED
Length: 140mm
Width: 70mm
Power Source: PP3 9V
Year introduced: 1978

See other calculators by National Semiconductor