Vintage Texas Instruments TI Programmable 58 Electronic Handheld Calculator, Model TI-58, Made In USA, Introduced In 1977
The TI 58-calculator uses a plug-in module with pre-programmed functions. The standard TI-58 model included a Master Library Module which plugged into the module socket in the rear. It was also possible to buy modules with libraries of functions for other types of calculation.
The TI-58 was a cut down version of the TI-59 lacking the magnetic card reader and having half the memory but otherwise identical.
Vintage Texas Instruments TI Programmable 58 Electronic Handheld Calculator, Model TI-58, Made In USA, Introduced In 1977
The TI 58-calculator uses a plug-in module with pre-programmed functions. The standard TI-58 model included a Master Library Module which plugged into the module socket in the rear. It was also possible to buy modules with libraries of functions for other types of calculation.
The TI-58 was a cut down version of the TI-59 lacking the magnetic card reader and having half the memory but otherwise identical.