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A keyboard machine used to punch holes in cards or tapes for data-processing systems.
intr. & tr.v. key·punched, key·punch·ing, key·punch·es
To process on or use such a keyboard machine.

key′punch′er n.


1. a machine, operated by a keyboard, for coding information by punching holes in cards or paper tape in specified patterns.
2. to punch holes in (a punch card or paper tape) using a keypunch.
3. to insert (data) into a computer by means of a keypunch.
key′punch`er, n.
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References in periodicals archive ?
Among machines designed to work with punch cards were keypunches (to encode the cards), sorters (to put them in proper order for processing) and readers (like tabulators and calculators, to aggregate and output information).
Each time someone keypunches data into their POS system, the capacity for mistakes exists.
Equipment includes a tabulator, calculator, sorter, collator, reproducer, three keypunches, two verifiers and a card interpretator.