He wrote the hardware column in Byte magazine for years. He wrote articles about making just about anything hardware related, from video cards, to printer spoolers (dedicated computer to accept a print job from a general purpose computer and dole it out to the printer), to modems, to simple computers running BASIC (think the forerunner of the Raspberry Pi).
I think the poster was pointing out the misspelling of his name in the original comment. He's Steve Ciarcia not Garcia.