《单片机实训》仿真设计说明书专业名称:电子信息工程班级:11班学号:2010姓名:指导教师:日期:2013年05月05日目录一、设计的目的和意义.......................................................................................................................-3-1、设计背景....................................................................................................................................-3-2、设计的目的及意义....................................................................................................................-3-二、设计原理及规模...........................................................................................................................-5-1、器件的简介................................................................................................................................-5-(1)AT89C51的简介....................................................................................................................-5-(2)LCD显示屏简介....................................................................................................................-7-2、软件程序设计............................................................................................................................-9-三、正文.............................................................................................................................................-10-1、方案的论证..............................................................................................................................-10-2、主要参数的计算......................................................................................................................-10-3、功能的实现..............................................................................................................................-11-(1)硬件部分...............................................................................................................................-11-①矩阵键盘...........................................................................................................................-11-②LCD显示电路....................................................................................................................-12-③键盘的消抖......................................................................................................................-13-④仿真电路..........................................................................................................................-13-(2)软件部分...............................................................................................................................-13-①LCD显示模块....................................................................................................................-14-②密码判断模块..................................................................................................................-14-③密码重置模块..................................................................................................................-17-④密码锁复位模块..............................................................................................................-18-⑤密码安全提示模块..........................................................................................................-19-四、结论................................