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Changing short description from "Punch card with all holes punched." to "Punch card with all holes punched" (Shortdesc helper)
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{{Short description|Punch card with all holes punched}} |
{{Short description|Punch card with all holes punched}} |
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[[Image:IBM lace card.jpg|right|thumb|300px|A lace card from the early 1970s]] |
[[Image:IBM lace card.jpg|right|thumb|300px|A lace card from the early 1970s]] |
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A '''lace card''' is a [[punched card]] with all holes punched (also called a '''[[whoopee (disambiguation)|whoopee]] card''', '''[[ventilator]] card''', '''[[flyswatter]] card''', or '''[[IBM]] [[doily]]'''). They were mainly used as practical jokes to cause disruption in [[Punched card reader|card readers]]. Card readers tended to jam when a lace card was inserted, as the resulting card had |
A '''lace card''' is a [[punched card]] with all holes punched (also called a '''[[whoopee (disambiguation)|whoopee]] card''', '''[[ventilator]] card''', '''[[flyswatter]] card''', or '''[[IBM]] [[doily]]'''). They were mainly used as practical jokes to cause disruption in [[Punched card reader|card readers]]. Card readers tended to jam when a lace card was inserted, as the resulting card had insufficient structural integrity to avoid buckling inside the mechanism. Card punchers could also jam trying to produce cards with all holes punched, owing to power-supply problems. When a lace card was fed through the reader, a [[card knife]] or [[card saw]] (a flat tool used with punched card readers and card punches) was needed to clear the jam.<ref>{{cite web|title=Jargon File, v4.2.1|url=http://catb.org/jargon/oldversions/jarg421.txt|accessdate=23 June 2015|date=5 March 2000}}</ref><ref>{{cite book|last1=Raymond|first1=Eric S.|title=The New Hacker's Dictionary|date=1996|publisher=MIT Press|location=Cambridge, MA|isbn=0-262-18178-9|page=368}}</ref> |
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==See also== |
==See also== |
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Alace card is a punched card with all holes punched (also called a whoopee card, ventilator card, flyswatter card, or IBM doily). They were mainly used as practical jokes to cause disruption in card readers. Card readers tended to jam when a lace card was inserted, as the resulting card had insufficient structural integrity to avoid buckling inside the mechanism. Card punchers could also jam trying to produce cards with all holes punched, owing to power-supply problems. When a lace card was fed through the reader, a card knifeorcard saw (a flat tool used with punched card readers and card punches) was needed to clear the jam.[1][2]
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