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Sinclair Sovereign

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.

Facts at a glance:

Type Arithmetic
Functions 8
Keys 21
Precision 8
Logic Algebraic
Display type LED
Display size
Length 141 mm
Width 36 mm
Thickness 12 mm
Weight unknown g
Power Source 2x1.5V mercury cell
Original price unknown
Est. current value unknown
Year introduced 1976
Year discontinued 1977

See other calculators manufactured by Sinclair.