Input/output device for programmable controller

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364900, G06F 900

Patent

active

045702152

ABSTRACT:
An input/output device for a programmable controller provided separately from said device capable of performing the bidirectional transmission such as taking in the input data and sending out the output data only by connecting the main unit of said controller to said input/output device or devices with two systems of signal line consisting of a serial data conductor and a clock signal conductor.

REFERENCES:
patent: 4228495 (1980-10-01), Bernhard et al.
patent: 4314334 (1982-02-01), Daughton et al.
patent: 4319338 (1982-03-01), Grudowski et al.
patent: 4354226 (1982-10-01), Flickinger et al.

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