Texas Instruments DataChron (TI-1790)

Texas Instruments DataChron
Image: Mark Bollman, used with permission
The Texas Instruments DataChron is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 31 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 2xLR44. The calculator was manufactured in Japan. Note: time

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 7
Keys: 31
Precision: 8
Logic: Algebraic
Display type: YLCD
Length: 135mm
Width: 68mm
Thickness: 9mm
Power Source: 2xLR44
Country: Japan
Year introduced: 1978
YearDiscontinued: 1978

See other calculators by Texas Instruments