What is the meaning of Punch_card?

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.

  1. Such a card, the size of a US dollar bill and having 80 columns of 12 rows, used in early mainframe computers.

Such a card, the size of a US dollar bill and having 80 columns of 12 rows, used in early mainframe computers.

A card given to a customer and punched with a hole at each purchase, allowing a reward to be claimed when fully punched.

Source: wiktionary.org