• 1946

Hardware Description

The IBM 519 Document-Originating Machine, introduced in 1946, was the last in a series of unit record machines designed for automated preparation of punched cards. It could reproduce all or parts of the information on a set of cards "gangpunch" - copy information from a master card into the following detail cards print up to eight digits on the end of a card compare two decks of cards summary punch information provided by a connected accounting machine “mark sense.” - marks made with an electrographic pencil in designated locations on a punched card are sensed and then holes corresponding to those marks punched into the card number cards consecutively (an optional feature)