Way back yonder, when personal computers were determined to be an emerging market, lots of folks jumped into the water, including
Exxon. In the rush to office automation and the paperless society Exxon, AT&T, Tandy Corp (Previously a leather craft house), Xerox, Texas Instruments and several others made personal computers. So, at one time Apple and Exxon were competitors.
But Tandy was making electronics long before they got into the computer business, through their Radio Shack subsidiary.