Dispositiu d'entrada: diferència entre les revisions

[[Targeta perforada|Les targetes perforades]] i [[Cinta perforada|les cintes perforades]] van ser molt utilitzades al segle XX.<ref>{{cite book|title="KNOW-HOW" MAKES THEM GREAT|publisher=Tabulating Machines Division, Remington Rand Inc.|year=1941}}</ref> Un forat perforat representava un "1"; la seva absència representava un "0". Hi havia lectors mecànics i òptics.<ref name="Steven Pinker 2007, p.362">Steven Pinker, in ''The Stuff of Thought'', Viking, 2007, p.362, notes the loss of ''-ed'' in pronunciation ''as it did in ice cream, mincemeat, and box set, formerly iced cream, minced meat, and boxed set.''</ref>