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Sinclair Executive

Sinclair Executive
Image: Wikimedia CC BY-SA 3.0

The Sinclair Executive is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4x mercury cell. Note: First Sinclair calculator.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys18
Precision8
LogicAlgebraic
Display typeLED
Length138mm
Width56mm
Thickness9mm
Weight71g
Power Source4x mercury cell
Year introduced1972

Replacements:

If you have a Sinclair Executive that is no longer working, you can first try replacing the 4x 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