Vintage Texas Instruments TI Programmable 58 Electronic Handheld Calculator, Model TI-58, Made In USA, Introduced In 1977 | Old computers, Calculator, Pocket calculators
TI58 Special Function Calculators
A history in calculators
TI-58C
Texas Instrument TI-58/59 Programmable calculator and the PC-100C from 1977 - Erix Collectables #76 - YouTube
Ti 58C 59 Programmable Personal Prog 2V: Texas Instruments: Amazon.com: Books