Texas Instruments TI‑1744

Description

Brand: Texas Instruments
Model: TI-1744
Type: Calculator
Picture: TI-1744
Batteries: LR43 x 2
Lifetime: Introduced: 1982
Terminated: unknown
Notes: Classified in this museum under "Plain", this small calculator is slightly more than a plain calculator, it has some scientific abilities. It has parenthesis, reciprocals, square roots, the constant π, squares and sign reversal.

It has constant memory and AUTO SHUT OFF.

No idea what happened to the keys of this particular example. I’m guessing the markings wore out and its user tried to correct that using a white correction marker.