In this paper, the design is the electronic trick lock which is based on the mcu. Compare the input password with the password prejudgment by Single-Chip,through the alarm system,lighting control systems and the display of Digital tube that prompt whether the door is opened.
Draw the Simulation diagram by the software of protues, achieve the functions of the entire circuit by the programming language of C , debug the program by using the software of Keil uVision2. The design which introduces in this paper contains the Single-chip(AT89S51), 7 sections of numerical code tubes,Speaker and ect.
The electronic trick lock which introduces in this paper has the advantage of convenient and safety, at the same time ,compares with the traditional lock and the electronic card lock ,it overcomes the disadvantage of easy to lose and easy to copy.Now the electronic password lock is widely used in Safety Deposit Box and the Security Systems of Community.