![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 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](https://upload.wikimedia.org/wikipedia/commons/a/ad/Vintage_Texas_Instruments_Model_SR-10_Pocket_LED_Calculator%2C_First_of_a_Line_of_TI_%22Slide_Rule%22_Models%2C_Sealed_Battery%2C_Price_-_149.95_USD%2C_Circa_1972_%289304906070%29.jpg)
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
Texas Instruments Programmable 58 C Handheld Electronic Calculator | National Museum of American History
![12.0001.001 - Texas Instruments TI-66 Programmable Calculator | Office of History, National Institutes of Health 12.0001.001 - Texas Instruments TI-66 Programmable Calculator | Office of History, National Institutes of Health](https://s3.amazonaws.com/pastperfectonline/images/museum_725/005/120001001.jpg)