单片机原理及系统课程设计 专 业： 电气工程及其自动化 班 级： 电气 1001 班 姓 名： 学 号： 指导老师： 兰州交通大学自动化与电气工程学院2025 年 3 月 7 日评语：考勤（10） 守纪（10）过程（40）设计报告（30）答辩（10）总成绩（100）基于单片机的密码锁设计摘要随着人们生活水平的提高，如何实现家庭防盗这一问题也变得尤其突出，传统的机械锁由于其构造简单，安全性能低，无法满足人们的需求。随着电子产品向智能化和微型化的不断进展，单片机已成为电子产品研制和开发中首选的控制器，所以具有防盗报警功能的电子密码控制系统逐渐代替传统的机械式密码控制系统，克服了机械式密码控制的密码量少，安全性能差的缺点。通过单片机编写密码程序，并用 74LS245 驱动的数码管来显示密码。数码管可以时时显示当前输入的四位数字。当输入密码正确时，对应的指示灯亮；当密码不正确时，发出声音报警。关键词:密码锁 ,单片机 ,报警AbstractWith the improvement of people's living standards, it has become particularly prominent about how to achieve Anti-theft family. The traditional mechanical lock has such shortcoming as simple structure , Low security ,it can't meet people's demands.As electronic products are developing towards intelligence and minimization, single-chip computers(SCM) have become the first choice for controllers in the development of electronic products. Therefore, the electronic anti-theft alarm function password control system and gradually replace the traditional mechanical password control system, Overcome the low mechanical password control password and the shortcomings of poor safety performance ， the password program written by SCM, and 74ls245 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 sound alarm。Keywords: Combination lock, Single-chip microcomputer, alarm1 引言1.1 设计要...
