Punched card available, e.g. "80-column card". A sequence of cards that is input to or output from some step in an application's processing is called a "card deck" or simply "deck". The rectangular, round, or oval bits of paper punched out were called chad ("chads") or "chips" (in IBM usage). Sequential card columns allocated for a specific use, such as names, addresses, multi-digit numbers, etc., are known as a "field". The first card of a group of cards, containing fixed or indicative information for that group, is known as a "master card". Cards that are not master cards are "detail cards". The
Punched card Fold, Spindle or Mutilate", coined by Charles A. Phillips, It became a motto for the post-World War II era (even though many people had no idea what spindle meant), and was widely mocked and satirised - for example by students at Berkeley in the 1960s wearing buttons saying: "Do not fold, spindle or mutilate. I am a student". Processing of punched cards was handled by a variety of machines, including: Punched card A punched card or punch card is a piece of stiff paper that can be used to contain digital data represented by the presence or absence of holes