CHANGZHOU INSTITUTE OF TECHNOLOGY科研实践题目:基于单片机的数字电子钟二级学院(直属学部): 延陵学院 专业: 电气工程及其自动化 班级:学生姓名: 学号:指导老师姓名:职称: 副教授 目 录一、绪 论........................................................................31.1 课题讨论的背景和意义......................................................31.2 课题讨论的目的............................................................3二、课题设计概况..................................................................42.1 课题主要实现功能..........................................................42.2 课题功能分析..............................................................42.3 课题功能实现过程的描述....................................................4三、总体设计方案..................................................................53.1 单片机的选择..............................................................53.2 数字电子钟显示方案论证....................................................5四、硬件设计......................................................................64.1 总体设计结构图............................................................64.2 单片机最小系统的设计......................................................64.3 输入电路的设计............................................................74.4 输出电路的设计............................................................8五、软件设计.....................................................................105.1 主程序结构图.............................................................105.2 主程序流程图.............................................................105.3 主要程序模块分析.........................................................125.3.1 延时程序...........................................................125.3.2 计 24 小时程序......................................................125.3.3 暂停/继续程序.....................................................145.3.4 校时灯闪程序......................