Sinclair Scientific

Sinclair Scientific
Image: wass.net used with permission
The Sinclair Scientific is a scientific calculator with 8 digits precision and RPN (reverse polish notation) logic. It has 17 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4xAAA.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 17
Keys: 18
Precision: 8
Logic: RPN
Display type: LED
Length: 112mm
Width: 51mm
Thickness: 18mm
Weight: 56g
Power Source: 4xAAA
Original price: 69
Year introduced: 1974
YearDiscontinued: 1975

See other calculators by Sinclair