A 3D-printed punch card reader: the first step to a working printed computer. Chris Fenton hopes to build a working electromechanical computer out of parts made by a 3D printer.

This chrome-plated hollow brass cylinder has embossed on its outer surface the numbers and letters for an 80-column IBM punch card. Sections of the card are for several quantities associated with ...

And as with all of our books and printed materials, punch cards also represented a significant energy burden. Factoring in the paper production, the transport, the machines, ...

On the card punch machines in the student cluster, ... at least into the mid-1980s, were actually printed on punch cards, with the data from the check also punched into it.

The device attached to a weaving loom and used printed punch cards to "program" intricate patterns in the woven fabric. One of these devices, circa 1850, just sold for $43,750 at Sotheby's annual ...

Punch-card ballots are still used by about a third of American voters, mainly because they're cheap. Upgrading to electronic systems could cost a county with a population of 1 million as much as ...

Undeterred, he decided to make a punch card-to-keyboard interface using optical parts from disassembled HP print stations. Specifically, he took apart the slotted optical interrupter switches to ...

Most cards featured 80 columns, because the 1890 Census had 80 questions, and Herman Hollerith had created the modern punch card to tabulate the results -- a legacy that lived on, both in decades ...

This cream-colored punch card with dark blue printing is the statement of earnings and deductions for E. N. Sivowitch, issued by the General Services Administration. Elliot Norman Sivowitch was a ...

The Floyd County Museum has an estimated 250,000 punch cards from between 1954 through 1976, each one serving as a sort of ...