Texas Instruments TI-81 Handheld Electronic Calculator | National Museum of American History
The first handheld computer, the TI-59 programmable calculator could execute a sequence of preprogrammed instructions, store and retrieve data, apply conditional logic, and make computations. Shown here with the optional PC-100C printer
Texas Instruments TI-57 - My very first programmable calculator (1980) | Calculator, Computer history, Pocket calculators
The History Of The Calculator: When was the Calculator First Invented?
Texas Instruments Programmable 58 C Handheld Electronic Calculator | National Museum of American History