Texas Instruments TI-55

Texas Instruments TI-55
Image: Joe Haupt, CC BY-SA 2.0
The Texas Instruments TI-55 is a programmable calculator with 8 digits precision and algebraic logic. It has 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack. The calculator was manufactured in USA.

Facts at a glance:

Feature Value
Type: Programmable
Keys: 40
Precision: 8
Logic: Algebraic
Display type: LED
Length: 145mm
Width: 80mm
Thickness: 33mm
Power Source: Sealed battery pack
Country: USA
Year introduced: 1977
YearDiscontinued: 1979

See other calculators by Texas Instruments