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The first were punched card readers, which read the paper or cardboard punched cards that were used during the first several decades of the computer industry to store information and programs for computer systems. JSTOR ( October 2010) ( Learn how and when to remove this template message)Ī card reader is a data input device that reads data from a card-shaped storage medium.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.