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The IBM 519 Electric Document Originating Machine, introduced in 1946, was the last in a series of unit record machines designed for automated production of punch cards. It could reproduce all or parts of the information on a set of cards; copy the information from a master card onto a group of detail cards; printing up to 8 digits on the end of the card; compare two decks of cards, punch summary information provided by an accounting machine. It could operate at 100 cards per minute.
Optional features allowed the 519 to read pencil marks on cards and punch the data they contain, and to number cards consecutively. The 519 was programmed by wiring a removable control panel.
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