密码锁.doc

密码锁



摘  要

AT89C51单片机的全称是单片微型计算机（Single Chip Microcomputer）。为了使用方便，它把组成计算机的主要功能部件：中央处理器（CPU）、数据存储器（RAM）、程序存储器（ROM、EPROM、E2PROM或FLASH）、定时/计数器和各种输入/输出接口电路等都集成在一块半导体芯片上，构成了一个完整的计算机系统。与通用的计算机不同，单片机的指令功能是按照工业控制的要求设计，因此它又被称为微控制（Microcontroller）。本系统由单片机系统、矩阵键盘、LED显示和报警系统组成。系统能完成开锁、超时报警、超次锁定、管理员解密、修改用户密码基本的密码锁的功能。除上述基本的密码锁功能外，还具有调电存储、声光提示等功能，依据实际的情况还可以添加遥控功能。本系统成本低廉，功能实用。
关键词：AT89C51；矩阵键盘；LED显示；报警系统；密码锁；

Abstract

At89C51 monolithic integrated circuit's full title is the monolithic microcomputer (Single Chip Microcomputer). For the easy to operate, it composes computer's major function part: The central processor (CPU), the Randon access memory(RAM), the Read Only Memory (ROM, EPROM, E2PROM or FLASH), fixed time/the counter and each kind of input/output interface electric circuit and so on integrates on together the semiconductor chip, constituted a complete computer system. Is different with the general computer, monolithic integrated circuit's command function is defers to the industrial control the request design, therefore it is called the micro control (Microcontroller). This system by the monolithic integrated circuit system, the matrix keyboard, the LED demonstration and the alarm system is composed. The system can complete the unblanking, the overtime warning, ultra locking, the manager to decipher, the revision user password basic combination lock function. Besides above basic combination lock function, but also has adjusts the electricity to save, functions and so on acousto-optic prompt, rests on the actual situation also to be possible to increase the remote control function. This system cost is inexpensive, the function is practical.
Keyword：AT89C51; Matrix Keyboard; LED display; Alarm System Locks;