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aperture card

noun
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Definition of aperture card

: a punched card for data processing in which one or more frames of a microfilmed document are mounted

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First Known Use of aperture card

1959, in the meaning defined above

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The first known use of aperture card was in 1959

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Cite this Entry

“Aperture card.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/aperture%20card. Accessed 19 January 2020.

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