Texas Instruments Programmable 58  
Written by Accutron on 2015-06-06  

Devices included in this entry:

Texas Instruments Programmable 58 handheld calculator (pictured in thumbnail)
Texas Instruments PC-100A printer cradle


The Texas Instruments Programmable 58 (or TI-58) is a powerful general purpose programmable calculator. Along with the card-programmable TI-59, the TI-58 makes use of miniature interchangeable software ROM cartridges which plug into the back of the unit. Introduced in 1977, the TI-58 and TI-59 were positioned to compete against the Hewlett-Packard HP-65 and HP-67 card-programmable calculators, but would soon be outclassed by the extremely powerful HP-41C, which featured an alphanumeric LCD display and continuous memory. TI would later release the Programmable 58C, an upgraded TI-58 with continuous memory.


Texas Instruments Programmable 58 calculator.


TI-58 calculator, Master Library software module.


TI-58 calculator, attached to a PC-100A printer cradle. The PC-100A is TI's awkward competition to HP's Topcat series of portable desktop calculators. In addition to the TI-58, the PC-100A is compatible with several other models of TI calculator, including the SR-52, SR-56 and TI-59.

This article is part of the [Electronic Calculators] exhibit.

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