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Device for selecting computer operational mode and labeling input controls accordingly

  • US 4,030,094 A
  • Filed: 07/14/1975
  • Issued: 06/14/1977
  • Est. Priority Date: 07/14/1975
  • Status: Expired due to Term
First Claim
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1. In an input/output station for a data processing system, said input/output station having a plurality of manually operable switches, THE IMPROVEMENT COMPRISING a translucent overlay receivable on said input/output station, said overlay including visible legend means for labeling said switches, and means on said overlay for optically encoding information, said input/output station having reader means to opto-electronically transduce said message into an electronic signal, said means for optically encoding including means for producing a signal indicative of receipt of said overlay on said input/output station and correct alignment therebetween.

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