As Union Switch and Signal reaches its 100th birthday, the application of computers to train movement control is now marked by the use of minicomputers. The next evolutionary stage, the large-scale integrated circuit or microprocessor, is now starting to be utilized for railroad control applications. While computer-aided dispatching, readily handled by minicomputers, is somewhat restricted when microprocessors are used because of their limited "memory," the distributed functions of dispersed microprocessor installations still can provide an overall capability. Electronics technology is causing new looks to be taken at traditional relay-based vital (affecting safety) control systems.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    508 Birch Street
    Bristol, CT  United States  06010
  • Publication Date: 1981-5-11

Media Info

  • Features: Photos;
  • Pagination: p. 16
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00334954
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 9 1981 12:00AM