单片机密码锁 论文.doc

编号:
单片机
实训(论文)说明书
题目: 密码锁
院(系): 信息与通信学院
专业: 电子信息工程
学生姓名:
学号:
指导教师:

2012 年 12 月 26 日
摘要
在单片机向着大容量、多功能、高性能、高速度、低电压、低功耗及外围电路内装化的方向发展的时代,选择一种性价比最优的芯片显得尤为重要。
在本次课程设计中,程序编写可选汇编和C语言。而汇编效率高,对硬件的可操控性更强,体积小,但不易维护,可移植性很差;C语言效率比较低,硬件可操控性比较差,目标代码体积大,但容易维护,可移植性很好。该系统用C语言编写程序,与汇编语言相比具有更好的移植性和可读性,便于修改和增减功能,故本次课程设计我选择了C语言。
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。密码锁是一种成本低,安全高效,适用于大众家庭,旅馆和宾馆等私人场所或公共场所的。如今的密码锁产品正向更安全,更环保的方向发展。
关键词: STC89C52RC单片机;数码管;密码锁;报警
Abstract
In the single chip puter to large capacity, multi-function, high performance, high speed, low voltage, low power consumption and peripheral circuit built in turn in the direction of the development of The Times, choose a ratio of optimal chip is particularly important.
In this course design, programming optional assembly and C language. And the assembly efficiency high, the hardware can be handling more strong, small volume, but not easy maintenance, portability is very poor. C language efficiency is lower, hardware can be handling more bad, the target code is big, but easy to maintenance, portability is very good. The system USES C language program, and assembly language than has better portability and readability, easy to modify and increase or decrease function, so the curriculum design I chose C language.
Electronic coded lock is a kind of through the password input to control the circuit or chip work, so as to control mechanical switch closed, complete the lock, lock the task of electronic products. It is a lot of more phyletic, has simple circuit products, also have based on chip high cost performance bination lock is a low cost, safe and effective, mass for family, hotel and hotels and other private or public places. bination lock products are now more security, more environmentally friendly direction.
Key words: STC89C52RC MCU; Digital tube; Coded lock; alarm
目录
引言 2
1 系统硬件介绍 2
 2
主控芯片 2
89C52特性 3
89