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Emulated Keylock for Computer

IP.com Disclosure Number: IPCOM000039250D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Anthony, BO Grazier, EC Mitchell, GR [+details]

Abstract

Nonvolatile random access memory (NVRAM) 10, connected to computer 12 particularly to its input 14 (via line 11), provides the output signal "unique password entered" (on line 11) when a unique password has been entered in computer 12, and this signal, applied to computer input 14, puts computer 12 in operating state at this time and causes computer 12 to be locked in an inoperative state until this unique password has been entered into the computer. Previously, a mechanical keylock switch connected to computer input 14 had been used when it was desired to render the computer operative, and RAM 10 replaces the keylock switch.