Mobility

The Handheld Museum: A tribute to the early history of handheld gaming

Texas Instruments Dataman

Texas Instruments- Dataman (1977, VFD, 9 Volt, Model# ??)
Math learning tool, not a calculator as it appears. You would type in a math formula and what you thought was the answer, and it would tell you if you got it correct or not. It also included several games

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