基于51单片机的电子密码锁---毕业论文.doc

通信 104 班姓名: AA 基于单片机的电子密码锁 I 单片机课程设计项目名称基于单片机的电子密码锁专业班级通信 104 班学生姓名 AA 指导教师 AA 2012 年 11月 28日通信 104 班姓名: AA 基于单片机的电子密码锁 II 摘要电子密码锁是一种通过密码输入来控制电路或是芯片工作,从而控制机械开关的闭合,完成***、闭锁任务的电子产品。它的种类很多,有简易的电路产品,也有基于芯片的性价比较高的产品。现在应用较广的电子密码锁是以芯片为核心,通过编程来实现的。本文以 AT89C51 单片机为核心器件,结合按键电路、LED 数码管显示电路、报警指示电路和***机构,利用单片机灵活的编程设计和丰富的 I/O 端口,及其控制的准确性通过软件程序来控制整个系统实现电子密码锁的基本功能,其主要具有如下功能: ●密码通过键盘输入,若密码正确,则将锁打开●密码输入错误,蜂鸣器将报警提示●用户可以自由设定密码关键词: AT89C51 ;电子密码锁;功能通信 104 班姓名: AA 基于单片机的电子密码锁 II The Simulation Design of Electronic Cipher L ock B ased on MCU Abstract The electronic cipher lock isa electronic products, which control the mechanical switch by the control circuit or chip when you input a password. It has many different types ,for example, simple circuit products , chip products with a higher value. Now the widely used electronic locks are based on the chip and achieve the function by programming. Based on the AT89C51 single-chip puter as the core device, combining with the key circuit, LED digital tube display circuit, an alarm circuit and unlocking mechanism, design the whole system to achieve the basic functions of electronic cipher lock by its flexible programming , rich I/O port, and accuracy basing on the software program .W ith the following functions :● Input password through the keyboard, if the password is correct, lock will open ● If the password is error, the buzzer will alarm ● Users can freely set the password The lock has some features like a reasonable design methods , simple to work , low cost and security , it also has some promotion value. Key words : AT89C51 ;C ipher lock ; Function 通信 104 班姓名: AA 基于单片机的电子密码锁 III 目录摘要............................................................................................................................ I Abstract ..................................................................................................................... II 第一章绪论.......................................................................................................