Texas Instruments TI-21

The Texas Instruments TI-21 is a scientific calculator with 8 digits precision and algebraic logic. It has 25 functions, 40 keys, and an LCD (liquid crystal) display. The power source is 2xAA. The calculator was manufactured in Taiwan.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 25
Keys: 40
Precision: 8
Logic: Algebraic
Display type: LCD
Length: 155mm
Width: 76mm
Thickness: 18mm
Power Source: 2xAA
Country: Taiwan
Year introduced: 1982
YearDiscontinued: 1982

See other calculators by Texas Instruments