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William D Johnson, Donald L Ewing, James S Grisham Jr: Distributed single board computer industrial control system. Forney Engineering Company, Marvin A Naigur, John E Wilson, John J Herguth Jr, February 24, 1981: US04253148 (45 worldwide citation)

An industrial control system in accordance with the present invention is provided with a plurality of diverse controlled devices (e.g., fans, pumps, valves, solenoids, relays, etc.) for effecting overall system control. Each device has a unique set of logic control functions and/or command sequences ...


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Grisham James S, Johnson William D, Ewing Donald L: Systeme de controle industriel a ordinateurs sur carte unique multiples, Distributed single board computer industrial control system. Forney Engineering Company, MEREDITH & FINLAYSON, April 19, 1983: CA1145053

INDUSTRIAL CONTROL SYSTEM Abstract of the Disclosure An industrial control system in accordance with the present invention is provided with a plurality of diverse controlled devices (e.g., fans, pumps, valves, solenoids, relays, etc.) for effecting overall system control. Each device has a unique se ...