Sinclair Sovereign

Sinclair Sovereign
Image: used with permission
The Sinclair Sovereign is an arithmetic calculator with 8 digits precision and algebraic logic. It has 8 functions, 21 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 2x1.5V mercury cell. Note: Available in chrome, black and gold plate.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 8
Keys: 21
Precision: 8
Logic: Algebraic
Display type: LED
Length: 141mm
Width: 36mm
Thickness: 12mm
Power Source: 2x1.5V mercury cell
Year introduced: 1976
YearDiscontinued: 1977

See other calculators by Sinclair