Texas Instruments TI-2550

Texas Instruments TI-2550
Image: Joe Haupt, CC BY-SA 2.0
The Texas Instruments TI-2550 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 23 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4xAA battery pack. The calculator was manufactured in Italy; USA.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 23
Precision: 8
Logic: Algebraic
Display type: LED
Length: 166mm
Width: 82mm
Thickness: 46mm
Power Source: 4xAA battery pack
Country: Italy; USA
Year introduced: 1974
YearDiscontinued: 1975

See other calculators by Texas Instruments