University of Waterloo Punched Cards
physical object
2010.1.1
Description
University of Waterloo punched cards used to store data through the presence or absence of holes in predefined locations on the card. Each hole of a punch card is representative of one bit. Therefore these 72 column cards could potentially hold 648 bits. Punched cards could typically hold 80 characters: enough for a single line of code or data record.