基于51单片机的三位电子密码锁设计

he design of this article takes 80C51 as the main controller. Combine 3×3 matrix keyboard input, seven-segment digital tube display, alarm system, interrupt button and other peripheral circuit boards to form an electronic code lock.Use Proteus ISIS to draw the hardware schematic diagram, use Keil C51 for program design, and then combine the software and hardware to simulate and continuously debug the password lock system, and obtain an electronic system with high security, complete functions, easy operation and low power consumption.Some functions are realized, such as key input password, seven-segment digital tube display status, unlock prompt, over-time alarm and lock the keyboard, stop the alarm and activate the keyboard by pressing the key or timing, password modification, etc., and make the physical object. It has certain application and academic value.