Driver key card identifying system

Details Driver key card identifying system Driver key card identifying system

G - Physics

06

K

352/55

G06K 19/06 (2006.01) G06K 7/00 (2006.01) G06K 19/067 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1213053

DRIVER KEY CARD IDENTIFYING SYSTEM Abstract of the Disclosure A key card receiver is mounted in the cab of a truck. The driver inserts a card with a power-in contact shorted to several data output contacts. A power-out contact provides power to the receiver to operate three sequentially connected integrated circuits and another integrated circuit for pulsing the three serially connected circuits to convert concurrent binary data of shorted or open conductors on the driver card to a sequential data signal.

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