Unitrex 90SC

Unitrex 90SC
The Unitrex 90SC is a scientific calculator with 8 digits precision and RPN (reverse polish notation) logic. It has 23 functions, 22 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V.

One of the few RPN calculators made by manufacturers other than Hewlett-Packard.​

Facts at a glance:

Feature Value
Type: Scientific
Functions: 23
Keys: 22
Precision: 8
Logic: RPN
Display type: LED
Length: 140mm
Width: 70mm
Power Source: PP3 9V
Year introduced: 1975

See other calculators by Unitrex