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Abstract
Electronic locks have been widely used in daily life, as electronic products to intelligent and miniaturization, SCM has become electronic product research and development in the preferred controller¡£Since the microcontroller with small, low power consumption, high precision control, reliable, and more features,it is widely used in production¡£Electronic code lock is the life of each industry and one of the important parameters¡£In order to better promote electronic locks in all areas of application£¬we designed an application MCU AT89S52 microcontroller-based control design of a matrix switch with digital control devices and their working principle, design, and hardware and software of electronic lock¡£AT89S52 microcontroller device applications, the password program written by SCM, and 3-8 with 74LS47 Decoder 74LS138-driven digital control to display the password¡£Digital tube can always display the current input of six digits¡£When you enter the password correctly, the corresponding indicator light£»When the password is incorrect, the other, and the corresponding indicator light and sound alarm¡£
Key word£ºMatrix keyboard£¬SCM£¬Digital display £¬Electronic locks
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