89s51-based single-chip development board to create the password lock procedures, circuit diagrams should not upload, password lock to use a relatively clever show the median control locks to control and test each and every password is incorrect, and 3 keys with a password entry system , and a number of key input system, you can modify your password.

ds18b20xin.lst
ds18b20xin.obj
mima.c
mima.LST
mima.OBJ
STARTUP.LST
STARTUP.OBJ

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