keypunch

key·punch

K0047200 (kē′pŭnch′)n. 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.

key•punch

(ˈkiˌpʌntʃ)
n. 1. a machine, operated by a keyboard, for coding information by punching holes in cards or paper tape in specified patterns. v.t. 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. [1930–35] key′punch`er, n.

单词	keypunch
释义	keypunch key·punch K0047200 (kē′pŭnch′)n. 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. key•punch (ˈkiˌpʌntʃ) n. 1. a machine, operated by a keyboard, for coding information by punching holes in cards or paper tape in specified patterns. v.t. 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. [1930–35] key′punch`er, n. keypunch keypunch To punch holes in a punch card. Although punch cards are obsolete, some people still say "keys are punched" on a keyboard.
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