Using rf CARDS instead of traditional keys, to give each shall have the right to enter a person a piece of rf card, through the information identification card. Reader and single-chip microcomputer real-time connected to ID number, collection, processes the information, and then pass judgment on PC in implementing the information judgment record, open the door record and control to open and close the relevant operation, voice prompt operations. Should also consider people with no card, system should be equipped with the authentication password input device, through the SCM or PC for personal password verifying and open the door and no operation. PC should have a wrong judgment, and 20-the input locked the judgment to display device, real-time information to prevent strangers exhaustively attack.

基于51单片机的车用数字仪表.doc

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