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| | Unit Record Equipment - ScriptGenius.com (Site not responding. Last check: 2007-10-31) |
 | | Many organizations were loath to alter systems that were working, so production unit record installations remained in operation long after computers offered faster and more cost effective solutions. |
 | | Specialized uses of punch cards, including toll collection, microfilm aperture cards, and punch card voting, keep unit record equipment in use into the twenty-first century. |
 | | The IBM System/3, the original ancestor of the entire IBM midrange computer product line, was developed as a replacement for plugboard-programmable unit record machines. |
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