To punch a number on the card, a machine made a hole in one of ... The original cards used round holes and 45 columns, but an IBM inventor named Lake realized that narrow square holes could ...
Punch cards have been used to control the operation of machinery from the early nineteenth century, when the Frenchman Joseph Marie Jacquard patented an attachment to a loom in which a series of ...
About thirty years ago [H. P. Friedrichs] pulled off a hack that greatly improved the process of programming with punch cards. At the time, his school had just two IBM 029 keypunch machines.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback