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Personal computer for cutting off power when a lock mechanism of hard disk pack is released

  • US 5,151,992 A
  • Filed: 10/01/1990
  • Issued: 09/29/1992
  • Est. Priority Date: 10/03/1989
  • Status: Expired due to Fees
First Claim
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1. A computer system, comprising:

  • a power supply for supplying power to the computer system;

    an external storage unit removably connected to said computer system;

    lock means for locking the external storage unit when it is attached to the computer system, and for releasing the external storage unit when it is removed from the computer system;

    a switch turned on and off in response to the locking and releasing operations of the lock means, respectively;

    specified signal generating means for outputting a specified signal in response to a state change of the switch means;

    storage means for storing the attachment or detachment state of the external storage unit; and

    control means, connected to the power supply and the specified signal generating means, for cutting off the power from the power supply supplied to the computer system in response to the specified signal.

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