TI-81 Calculator

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The Texas Instruments TI-81 is a graphing calculator with 10 digits precision and formula input logic. It was the first graphing calculator produced by Texas Instruments. It has 50 keys and an LCD (liquid crystal) display. The power source is 4xAAA + CR1620 3V. The calculator was manufactured in Taiwan.

Information from calculator.org.

Manufacturer: Texas Instruments
Date: 1990

Other Systems Related To TI-81 Calculator:

Item Manufacturer Date
TI-2500 Datamath Calculator Texas Instruments 1972
TI SR-10 Electronic Sliderule Texas Instruments 1973
TI SR-10 Electronic Sliderule Texas Instruments 1973
TI-SR-50 Scientific Pocket Calculator Texas Instruments 1973
TI-2550 Memory Calculator (1st Design) Texas Instruments 1974
TI-2500 B Datamath calculator Texas Instruments 1974
TI-2550 II Texas Instruments 1975
TI-SR-51A Version 1 Texas Instruments June 1975
TI-SR-51-II. Advanced professional electronic calculator Texas Instruments 1976
TI SR-56 Programmable Calculator Texas Instruments May 1976
TI-30 Scientific Calculator Texas Instruments 1977
TI-1650 Programmable Calculator Texas Instruments 1977
TI-58 Programmable Calculator Texas Instruments 1977
Texas Instruments TI-59 Texas Instruments May 1977
TI-57 Programmable Calculator Texas Instruments May 1977
TI-42 MBA Electronic Calculator Texas Instruments August 1977
TI-45 Scientific Calculator Texas Instruments 1978
TI-33 Electronic Calculator Texas Instruments 1978
TI 2550-IV Arithmetic Calculator Texas Instruments 1978
Casio fx-140 calculator Texas Instruments 1978
TI Little Professor (Boxed) Texas Instruments 1978
TI-58C Programmable Calculator Texas Instruments 1979
TI-35 Scientific Calculator Texas Instruments 1979
TI Math Marvel Calculator Texas Instruments 1980
TI LCD Programmer 1981 Texas Instruments 1982
Little Professor 26-82-RC1 Texas Instruments 1985
TI-74 Basicalc Texas Instruments 1986
TI-5038 Paper-Free Printer Texas Instruments 1988
TI Europa 10 Texas Instruments 1990
TI-92 Graphing Calculator Texas Instruments 1995
TI-Nspire Graphing Calculator Texas Instruments July 2008

This exhibit has a reference ID of CH65622. Please quote this reference ID in any communication with the Centre for Computing History.

 

TI-81 Calculator


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