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Imperial 91S

The Imperial 91S is an arithmetic calculator with 8 digits precision and algebraic logic. It has 9 functions, 27 keys and a VFD (vacuum fluorescent) display. The power source is 4xAAA batteries.

Facts at a glance:

Type Arithmetic
Functions 9
Keys 27
Precision 8
Logic Algebraic
Display type VFD
Display size
Printer
Length 120 mm
Width 73 mm
Thickness 20 mm
Weight 116 g
Power Source 4xAAA
Country
Original price unknown
Est. current value unknown
Year introduced 1976
Year discontinued 1976

See other calculators manufactured by Imperial.