National Semiconductor 4650

National Semiconductor 4650
Image: Joe Haupt, CC BY-SA 2.0
The National Semiconductor 4650 is a scientific calculator with algebraic logic. It has an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack.

Facts at a glance:

Feature Value
Type: Scientific
Logic: Algebraic
Display type: LED
Length: 150mm
Width: 75mm
Thickness: 31mm
Power Source: Sealed battery pack

See other calculators by National Semiconductor