Design an electronic password lock, enter the password in the locked state, the password is 4 digits, use the data switch K1ï¾K10 to represent the numbers 1, 2, ..., 9, 0 respectively, the input password is displayed by the digital tube, and the last input The password is displayed on the rightmost digital tube, that is, each time you enter a single digit, the password is shifted to the left by one digit on the digital tube. The entered number can be deleted, and the last entered number is deleted. Each time one bit is deleted, the password is shifted to the right by one digit in the display of the digital tube, and "0" is added to the left empty bit. The state of one output level represents the open and close state of the lock. To ensure that the password lock owner can open the password lock, set a universal password and use it when the owner forgets the password.
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Password input deletion control module
Hosting module
Comparison module
Scan display module
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