Operation control system

Details Operation control system Operation control system

1989-03-20

1991-07-16

Smith, Jerry

Excavating

G06F 1110

Patent

active

050330500

ABSTRACT:
A data processing system having a device performing input and output of data for processing the data. The system includes a main control unit for processing the data and for performing a parity check function to detect abnormality of data transmitted in the system, a parity check control unit coupled to the main control unit for performing the parity check function for the device, and an external device unit operative coupled to the main control unit and the parity check control unit for performing input and output of the data under control of the parity check function and for generating an inhibition signal to inhibit the operation of the parity check control unit.

REFERENCES:
patent: 3177472 (1965-04-01), Githens
patent: 4223326 (1980-09-01), D'Amato et al.
patent: 4224681 (1980-09-01), Lewine
patent: 4326291 (1982-04-01), Marsh et al.
patent: 4872172 (1989-10-01), Sanner

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