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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.‚Äč

Facts at a glance:

Type Scientific
Functions 23
Keys 22
Precision 8
Logic RPN
Display type LED
Display size
Length 140 mm
Width 70 mm
Thickness unknown mm
Weight unknown g
Power Source PP3 9V
Original price unknown
Est. current value unknown
Year introduced 1975
Year discontinued

See other calculators manufactured by Unitrex.