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TI-59 / TI-58

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Texas Instrument TI-58/59 Programmable calculator and the PC-100C from 1977 - Erix Collectables #76

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Texas Instruments TI-100C Vintage TI-59 Programmable Calculator

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TI 59

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TI59 Programming and card reader demonstration

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Texas TI-59 reading a magnetic card written 30 years ago

The TI-59 is an early programmable calculator, that was manufactured by Texas Instruments from 1977. It is the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules". Just like the SR-52, it has a magnetic card reader for external storage. One quarter of the memory is stored on each side of one card.
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