AT89S51单片机实验及实践教程目录第一章AT89S51单片机实验及实践系统板简介┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅1第二章KeilC软件使用┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅14第三章AT89S51单片机下载器软件使用┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅25第四章实验及实践课题┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅281.闪烁灯┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅282.模拟开关灯┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅313.多路开关状态指示┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅334.广告灯的左移右移┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅375.广告灯（利用取表方式）┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅406.报警产生器┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅437.I/O并行口直接驱动LED显示┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅468.按键识别方法之一┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅499.一键多功能按键识别技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅5310.00－99计数器┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅5711.00－59秒计时器（利用软件延时）┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅6012.可预置可逆4位计数器┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅6313.动态数码显示技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅6714.4×4矩阵式键盘识别技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅7015.定时计数器T0作定时应用技术（一）┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅7916.定时计数器T0作定时应用技术（二）┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅8417.99秒马表设计┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅8918.“嘀、嘀、……”报警声┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅9519.“叮咚”门铃┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅9920.数字钟（★）┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅10521.拉幕式数码显示技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅11422.电子琴┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅12123.模拟计算器数字输入及显示┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅13424.8×8LED点阵显示技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅14125.点阵LED“0－9”数字显示技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅14626.点阵式LED简单图形显示技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅15327.ADC0809A/D转换器基本应用技术┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅15728.数字电压表┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅16329.两点间温度控制┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅167-1-AT89S51单片机实验及实践教程30.四位数数字温度计┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅17231.6位数显频率计数器┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅17732.电子密码锁设计┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅18033.4×4键盘及8位数码管显示构成的电子密码锁┅┅┅┅┅┅┅┅┅┅┅18634.带有存储器功能的数字温度计－DS1624技术应用┅┅┅┅┅┅┅┅┅┅19935.DS18B20数字温度计使用┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅211第一章AT89S51单片机实验及实践系统板简介AT89S51单片机实验及实践系统板（以后简介系统板）集成多个硬件资源模块，每个模块各自可以成为独立的单元，也可以相互组合，因此，可以为不同阶层的单片机爱好者及单片机开发者提供不同的开发环境。每个硬件模块介绍如下：1．继电器控制模块系统板上提供了2路继电器控制模块，分布在系统板的最左上端区域中，输入信号由Realyin1和Realyin2端口输入分别控制两路继电器，继电器控制的信号分别由最上端的两个插针输入和输出。分别称为“com1open1short1”，“com2open2short2”，由于这个两个继电器是单刀单掷控制，当继电器不吸合时，“com1”和“short1”相通，“com2”和“short2”相通；当继电器吸合时，“com1”和“open1”相通，“com2”和“open2”相通。其电路原理图1.1所示：图1.12．参考电压源模块在系统板上写有“参考电压源”