Texas Instruments SR-56 (SR-56 programmable)

The Texas Instruments SR-56 is a programmable calculator with 10 digits precision and algebraic logic. It has 61 functions, 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA sealed. The calculator was manufactured in Italy; Holland; USA.

Facts at a glance:

Feature Value
Type: Programmable
Functions: 61
Keys: 40
Precision: 10
Logic: Algebraic
Display type: LED
Printer: External
Length: 147mm
Width: 81mm
Thickness: 32mm
Power Source: 3xAA sealed
Country: Italy; Holland; USA
Year introduced: 1976
YearDiscontinued: 1977

See other calculators by Texas Instruments