File:Vintage Texas Instruments Model SR-10 Pocket LED Calculator, First of a Line of TI "Slide Rule" Models, Sealed Battery, Price - 149.95 USD, Circa 1972 (9304906070).jpg - Wikimedia Commons
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Calculator Museum
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History of TI Calculators timeline | Timetoast timelines
12.0001.001 - Texas Instruments TI-66 Programmable Calculator | Office of History, National Institutes of Health
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TI-30 - Wikipedia
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What Your Old Graphing Calculator Says About Technology - The Atlantic
Texas Instruments
The History Of The Calculator: When was the Calculator First Invented?
The Evolution of the Texas Instrument Graphing Calculator « Adafruit Industries – Makers, hackers, artists, designers and engineers!
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Texas Instruments TI-1000 Handheld Electronic Calculator | National Museum of American History
Texas Instruments SR-10 Handheld Electronic Calculator | National Museum of American History
Graphing calculator - Wikipedia
Texas Instruments - Company - Computing History
History of TI Calculators timeline | Timetoast timelines
Man Creates Huge Online Museum for Vintage Calculators | WIRED
OLD-COMPUTERS.COM : HISTORY / detailed info
Electronic Calculators—Handheld | National Museum of American History
