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Sinclair Sovereign

Sinclair Sovereign
Image: wass.net 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:

FeatureValue
TypeArithmetic
Functions8
Keys21
Precision8
LogicAlgebraic
Display typeLED
Length141mm
Width36mm
Thickness12mm
Power Source2x1.5V mercury cell
Year introduced1976
Year discontinued1977

Replacements:

If you have a Sinclair Sovereign that is no longer working, you can first try replacing the 2x1.5V mercury cell batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by Sinclair