Commodore 9R-31

The Commodore 9R-31 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 13 functions, 31 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 13
Keys: 31
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 140mm
Width: 76mm
Power Source: Sealed battery pack
Year introduced: 1975

See other calculators by Commodore