TI enters calculator market, September 21, 1972 - EDN
History of Graphing Calculators - Meta Calculator Blog
Texas Instruments
Texas Instruments SR-10 Handheld Electronic Calculator | National Museum of American History
Virtual Museum of Calculators
Timeline
Texas Instruments SR-52 Programmable Calculator, 1975
File:Vintage Texas Instruments TI Business Analyst Pocket LED Calculator, Made in the USA, the First in a Long Line of Popular Financial Calculators, Circa 1976 (9271798342).jpg - Wikimedia Commons
Texas Instruments
Nerd Alert: 7 Iconic Calculators of Yore | PCMag
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After going all-in with its chips, Texas Instruments tried its hand at toys and calculators
TI-81 - Wikipedia
First handheld calculator headlines auction of mathematical treasures
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Calculator Museum
Timeline
DATAMATH
World's first handheld calculator up for grabs - BBC Newsround
TI-59 / TI-58 - Wikipedia
The History Of The Calculator: When was the Calculator First Invented?
TI CALCULATOR HISTORY
Texas Instruments TI-57 - My very first programmable calculator (1980) | Calculator, Computer history, Pocket calculators
Texas Instruments
Examples of Texas Instruments calculators
