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Programmable master controller communicating with plural controllers

  • US 4,283,773 A
  • Filed: 04/30/1979
  • Issued: 08/11/1981
  • Est. Priority Date: 08/30/1977
  • Status: Expired due to Term
First Claim
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1. A data communication system comprising:

  • a. a programmable master controller including;

    1. master program memory storage means for storing program words defining an operating program,2. means for addressing said program words of said master program memory storage means,3. an arithmetic and logic unit for processing said program words of said master program storage means, and4. means for generating command bytes, said generating means operatively connected to said arithmetic and logic unit of said master controller.b. a plurality of additional controllers, each of said additional controllers including;

    1. means for receiving command bytes from said master controller, and2. means for providing input data bytes to said master controller in response to said command bytes,c. means for ORing selected input data bits of said input data bytes together to provide at least one of said input data bytes, andd. said additional controllers each including means for simultaneously transmitting said selected input bits to said master controller in response to a pre-determined command byte from said master controller, corresponding bits of said simultaneously transmitted bytes of said additional controllers having mutually exclusive data therein.

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