Electronic Code Lock And Alarm System Design Based on MCU
Abstract: This design takes improving the security of combination lock as the main purpose, AT89C51 microcontroller for the control of the core matrix keyboard, the display module and alarm system for the controlled object electronic locks. The system can complete the unlocking, the overtime reports to the police, the ultra locking, the manager deciphers, the revision user password and so on the basic password locks the function. In addition to the above mentioned basic password lock function, the system adds AT24C02 down memory can be powered-down storage, but also added an infrared receiver module, infrared remote unlocking can be realized. Based on the actual situation can also be extensions. This system cost inexpensive, function practical, easy to operate, safe reliable.
Key Words: AT89C51; AT24C02; Infrared remote control; Alarm
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