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Texas Instruments Datamath 2500

Texas Instruments Datamath 2500

The Datamath 2500 was Texas Instruments’s first pocket calculator, and one of the smallest calculators on the market at the time of its release in 1972. It was about the size of a pack of 100s cigarettes in length and about 1.5 packs in thickness. It sold for $119.95 at launch – about $640 today when adjusted for inflation.

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