The system is made up of single-chip microcomputer, display and other parts. It displays relevant information of the password lock using the display. When the system is powered up, it acquiers four sets of digital Ciphers (4 bits or more than 4 bits). If the password is entered correctly, it will open the password lock.

Filename	Size	Update
3.rar	9486	2018-03-04
新建文本文档.txt	0	2018-03-04

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