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Norbert Landsteiner

masswerk.at

Home page of Norbert Landsteiner (Design, Web-Development, Media, Consulting, Computer History)

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4

IBM Punched Card Typography

C ard punches of various types, models and makes featured an option to print the characters encoded by the holes punched in any of the columns in human readable form onto the top of the card. While it is well known that these characters were printed by a 5 × 7 dot matrix, comprehensive information on what these…