目 录
摘 要 .....................................................................................................................I
ABSTRACT..........................................................................................................II
1 绪 论...............................................................................................................1
1.1 单片机的定义 ..........................................................................................................................................1
1.2 电子时钟的特点及应用领域 ..................................................................................................................1
2 系统的总体设计方案 ........................................................................................2
2.1 系统框图 ..................................................................................................................................................2
2.2 系统功能介绍 .........................................................................................................................................2
2.3 计时控制方案 ..........................................................................................................................................3
2.4 显示控制方案 .........................................................................................................................................3
2.5 键盘控制方案 .........................................................................................................................................3
2.6 软件总体设计方案 .................................................................................................................................4
3 系统的硬件构成及功能 .....................................................................................5
3.1 AT89C2051 单片机及其引脚说明.........................................................................................................5
3.2 60 秒旋转译码驱动原理 .........................................................................................................................6
3.3 时分显示部件 .........................................................................................................................................8
4 系统的软件功能及设计 ...................................................................................11
4.1 系统主程序设计 ...................................................................................................................................11
4.2 定时中断程序设计 ...............................................................................................................................11
4.3 节电模式程序设计 ...............................................................................................................................12
4.4 整点报时程序设计 ...............................................................................................................................13
4.5 误差消除程序设计 ...............................................................................................................................14
5 结论...................................................................................................................17
致 谢.....................................................................................................................18
参考文献...............................................................................................................19
论文原创性声明 ..................................................................................................20
