Computer with security device for controlling access thereto
作者： George Chao
DOI:
关键词: Microprocessor 、 Keypad 、 Casing 、 Control unit 、 Front panel 、 Floppy disk 、 Password 、 Signal 、 Computer hardware 、 Engineering
摘要: A computer has a floppy disk drive provided in one of the spaces for receiving drives computer, keyboard and main system board. An access control device includes casing placed into another keypad on front panel operated so as to provide an input password, unit within electrically connected keypad. The memory which contains desired microprocessor receives password from generates activating signal when tallies with unit, at least circuit respective keyboard, Each circuits is actuated by unlock enable board permit normal operation computer.
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