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目录
1 概述...................................................................................................................1
1.1 单片机的定义.......................................................................................1
1.2 单片机的应用.......................................................................................1
2 开发工具...........................................................................................................4
2.1 Proteus 8.1.............................................................................................4
2.1.1 Proteus 简介..............................................................................4
2.1.2 Proteus 特点..............................................................................4
2.2 Keil 5.....................................................................................................5
3 系统设计...........................................................................................................6
3.1 设计背景...............................................................................................6
3.2 设计简介...............................................................................................6
3.3 设计原理...............................................................................................6
3.4 设计框图...............................................................................................7
4 硬件设计...........................................................................................................8
4.1 芯片选用...............................................................................................8
4.1.1 AT899C51 简介........................................................................8
4.1.2 引脚功能...................................................................................9
4.1.3 内部结构...................................................................................9
4.2 液晶显示屏.........................................................................................10
4.2.1 LCD1602 简介........................................................................10
4.2.2 引脚功能.................................................................................10
4.3 串行时钟电路.....................................................................................11
4.3.1 时钟电路 DS1302 简介 .........................................................11
4.3.2 引脚功能.................................................................................12
5 程序设计.........................................................................................................13
5.1 主程序设计.........................................................................................13