So if you had a card with a punch over the “1” followed by a punched out “5” in the next column and a “0” in the column after that, you were looking at 150. No punches, of course, was ...

Holroyd also works with punched cards, which he noted can last indefinitely in the right conditions. "The main challenge," he said, "is to avoid dropping a card deck and mixing up all the cards." ...

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 ...