design three binary serial number lock when the input received three were in line with the provisions of the binary code number, can unlock, and accordingly if a bright green, not two code words, code is too long or too short 3, procedures are not regarded as wrong. When the red light is wrong, wrong 2nd alarm, horn ring for, and unable to continue to operate until the administrator password. the re-start, and add a password to amend part in the open state, the user can change the password lock. to be flexible to change passwords more secure.

数字密码锁.doc

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