Definitions from Wiktionary (punch card)

▸ noun:  A card that can have holes or notches cut in it, especially one for storing data, that can be sorted according to combinations of holes present or absent.
▸ noun:  (computing, historical) Such a card, the size of a US dollar bill and having 80 columns of 12 rows, used in early mainframe computers.
▸ noun:  A card given to a customer and punched with a hole at each purchase, allowing a reward to be claimed when fully punched.
▸ Also see punch_card


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