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单词 Key puncher
释义

Key puncher

英语百科

Keypunch

(重定向自Key puncher)
Hollerith keyboard (pantograph) punch.
Keypunch operators at work at the U.S. Social Security Administration in the 1940s.
Hollerith's Keyboard (pantograph) Punch.  This photo is staged; the keyboard layout is for the Farm card (leftmost column is labeled

A keypunch is a device for precisely punching holes into stiff paper cards at specific locations as determined by keys struck by a human operator.

For Jacquard looms, the resulting punched cards were joined together to form a paper tape containing a program that, when read by a loom, directed its operation.

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更新时间:2025/6/23 1:32:01