Imperial 81SR

The Imperial 81SR is a scientific calculator with 8 digits precision and algebraic logic. It has 16 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAAA.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 16
Keys: 19
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 95mm
Width: 65mm
Thickness: 23mm
Power Source: 4xAAA
Year introduced: 1975

See other calculators by Imperial