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Prompting control

  • US 4,454,501 A
  • Filed: 05/10/1982
  • Issued: 06/12/1984
  • Est. Priority Date: 07/25/1980
  • Status: Expired due to Term
First Claim
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1. In a processor-based control system having a multifunction entry keyboard for an operator to enter function commands and data, the control arrangement comprising:

  • (a) keys for entering a plurality of function commands and data, and(b) processor-based means for defining a plurality of modes, means for defining a subset of the keys that are permissible operator key selections for each mode, and means for selecting a current mode in response to entry of a function command, and(c) means for directing the operator'"'"'s attention to the actual physical location of the subset of keys that are permissible operator key selections for the selected mode.

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