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Programmable read-only memory system for indicating service maintenance points for motor vehicles

  • US 4,159,531 A
  • Filed: 11/21/1977
  • Issued: 06/26/1979
  • Est. Priority Date: 11/21/1977
  • Status: Expired due to Term
First Claim
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1. A system for aiding in the maintenance of a motor vehicle comprising:

  • a programmable read-only memory permanently storing data at predetermined memory locations representing mileage points at which maintenance operations are to be carried out and data representing various items to be serviced at the individual mileage points;

    means coupled to the memory for addressing the predetermined different memory locations therein to derive first data signals therefrom representing mileage points at which certain maintenance operations are to be performed, and to derive second data signals therefrom representing the maintenance operations to be performed at such mileage points;

    first display means coupled to the memory and responsive to the first data signals for exhibiting the mileage corresponding to said mileage points; and

    second display means coupled to the memory and responsive to said second data signals for exhibiting indications representing the maintenance operations to be carried out at said mileage points.

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