基于单片机的电子锁

AbstractIn the daily life and work,the housing and the Department of security,the unit'sfile,financial statements and some personal information to save more to lock the wayto solve.With anti-theft alarm and other functions of the electronic password lock toreplace the password less,poor security mechanical lock is an inevitable trend.Withthe development of science and technology,people have more and more requirementsfor the safety and security devices in daily life.In order to satisfy the requirement ofthe use of the lock,the security of the lock is increased,and the cipher lock of the keyis used as the times require.Password lock with high security,low cost,low powerconsumption,easy to operate,remember the password to unlock,etc..This design with STC89C52 microcontroller as the core,with the correspondinghardware circuit,complete the password settings,storage,identification,drivesolenoid actuator,drive buzzer alarm,LCD display and other functions.MCUreceives the type the password and and stored in the EEPROM of a six digit codewere compared six digit password can have 100 million groups of differentcombinations for the owner to free transform,high degree of confidentiality,if thepassword is correct,the drive for the electromagnetic actuators lock;if the passwordis not correct,SCM is through the communication lines to the buzzer issued alarmsignal.KEY WORDS:Password lock;Liquid crystal;Matrix keyboard1