Sinclair Executive Memory

Sinclair Executive Memory
Image: Wikimedia CC BY-SA 3.0
The Sinclair Executive Memory is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3x mercury cell.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 4
Keys: 18
Precision: 8
Logic: Algebraic
Display type: LED
Length: 138mm
Width: 56mm
Thickness: 9mm
Power Source: 3x mercury cell
Year introduced: 1973

See other calculators by Sinclair