Texas Instruments TI-31

Texas Instruments TI-31
Image: Mark Bollman, used with permission
The Texas Instruments TI-31 is a finance calculator with 8 digits precision and algebraic logic. It has 33 functions, 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. The calculator was manufactured in Italy. Note: TI Money Manager

Facts at a glance:

Feature Value
Type: Finance
Functions: 33
Keys: 40
Precision: 8
Logic: Algebraic
Display type: LED
Length: 145mm
Width: 80mm
Thickness: 33mm
Power Source: PP3 9V
Country: Italy
Year introduced: 1977
YearDiscontinued: 1986

See other calculators by Texas Instruments