From the early 20th century into the 1970s, Americans used punched cards to enter data into tabulating equipment and then electronic computers. This is an early key-operated punch, based on patents of ...

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 ...

If you mention punch cards to most people, they’ll think of voting. If you mention it to most older computer people, they’ll think of punching programs for big computers on cards. But punched cards ...