语音信号的数字滤波处理(十二)CHANGSHAUNIVERSITYOFSCIENCE&TECHNOLOGY现代电子系统设计综合实习题目：电子时钟学生姓名：张家庆学号：201257050113班级:电子1201专业：电子信息工程指导教师：贺科学范必双袁志辉语音信号的数字滤波处理(十二)目录1电子时钟简介...........................................................................................................................11.1电子时钟概念.....................................................................................................................11.2电子时钟设计要求.............................................................................................................12控制系统的硬件设计...............................................................................................................22.1硬件电路的总体框图.........................................................................................................3语音信号的数字滤波处理(十二)语音信号的数字滤波处理(十二)2.2AT89C52单片机模块..........................................................................................................32.3液晶屏显示模块................................................................................................................52.4储存芯片模块.....................................................................................................................62.5蜂鸣器模块.........................................................................................................................72.6键盘电路模块.....................................................................................................................72.7晶振模块.............................................................................................................................83控制系统的软件设计...............................................................................................................83.1软件的总体流程图.............................................................................................................83.2液晶屏................................................................................................................................93.3键盘扫描...........................................................................................................................113.4蜂鸣器..............................................................................................................................123.5存储芯片...........................................................................................................................133.6软件仿真结果...................................................................................................................154实习总结...................................................................................................................................165参考文献...................................................................................................................................17附录A硬件电路原理图..........................................................................................................18附录B源程序代码...................................................................................................................191语音信号的数字滤波处理(十二)1电子时钟简介1.1电子时钟概念电子钟是一种利用数字电路来显示的计时装置，与传统的机械...
