IBM Punch Cards

by techtiptom

Originally posted on WIBC.com on 09/16/2012:

Do you remember these? Wikipedia says a punched card (or punch card or Hollerith card or IBM card) is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined positions. Now almost an obsolete recording medium, punched cards were widely used throughout the 19th century for controlling textile looms and in the late 19th and early 20th century for operating fairground organs and related instruments. They were used through the 20th century in unit record machines for input, processing, and data storage. Early digital computers used punched cards, often prepared using keypunch machines, as the primary medium for input of both computer programs and data. Some voting machines use punched cards.

 

We had key-punch classes when I went to Tech High School (showing my age now!)

The second picture shows what my mother did with the old cards that RCA threw out when she worked there, back in the 1970’s….  Do you have a pictures of creations made from IBM punch cards?

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