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Key pad for communicating with a microprocessor

  • US 5,736,942 A
  • Filed: 07/25/1996
  • Issued: 04/07/1998
  • Est. Priority Date: 07/25/1996
  • Status: Expired due to Fees
First Claim
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1. An interface system for facilitating communication between an operator and a microprocessor used to monitor and record real time data of a paper printing production machine for performing a project, comprising:

  • a microprocessor for monitoring and recording time periods for each one of a plurality of predefined statuses of the machine occurring during the performance of the project;

    a plurality of light guides for receiving an output signal from the microprocessor, each said output signal illuminating predetermined ones of said light guides, each said light guide being representative of one of said plurality of predefined statuses, anda plurality of function keys each selectable by the operator for generating an input signal to the microprocessor identifying one of said plurality of predefined statuses of the machine, each said function key being individually associated with one of said light guides so that an input signal can be processed by the microprocessor only from a function key associated with an illuminated light guide,whereby said microprocessor records the time period being monitored with the predefined status of the machine identified by the operator.

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