Secure computer system and method of providing secure access to a computer system including a stand alone switch operable to inhibit data corruption on a storage device

  • US 6,272,533 B1
  • Filed: 02/16/1999
  • Issued: 08/07/2001
  • Est. Priority Date: 02/16/1999
  • Status: Expired due to Term
First Claim
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1. A digital computer system comprising:

  • first and second electrically isolated buses;

    first and second independent central processing units connected to a respective one of said first and second buses;

    a storage device connected to each of said buses for selectively storing data; and

    a manually operative switch selectively controlling access by said first central processing unit to inhibit storing data to said storage device by said first central processing unit without inhibiting storing data by said second central processing unit.

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