信息与通信工程学院单片机系统课程设计报告完成日期:2012年11月16日目录目录........................................................................................................................................1一、设计任务和要求..........................................................................................................................11.1设计任务..................................................................................................................................11.2性能指标..................................................................................................................................1二、设计方案......................................................................................................................................22.1.方案设计..................................................................................................................................22.1.1单片机控制模块的选择论证..............................................................................................22.1.2温度湿度检测模块的选择与论证......................................................................................22.1.3显示模块的选择与论证......................................................................................................22.2本设计采用方案及原理..........................................................................................................3三、系统硬件设计..............................................................................................................................43.1单片机最小系统设计................................................................................................................43.2温湿度采集电路......................................................................................................................53.3电源电路..................................................................................................................................63.4光敏电阻接入电路..................................................................................................................63.5键盘电路..................................................................................................................................83.6LCD显示电路...........................................................................................................................83.7报警电路..................................................................................................................................93.8串行接口电路..........................................................................................................................9四.系统软件设计..............................................................................................................................104.1主程序设计............................................................................................................................104.2LCD12864模块程序................................................................................................................114.3DHT11模块程序.....................................................................................................................124.4光敏电阻模块程序.........................................................................................