本科论文目 录摘 要........................................................................................................................IAbstract.....................................................................................................................II引 言.......................................................................................................................11 系统整体设计........................................................................................................31.1 系统方案设计...............................................................................................31.2 系统工作原理...............................................................................................32 硬件设计................................................................................................................52.1 电源模块设计...............................................................................................52.1.1 电源模块选择......................................................................................52.1.2 电源模块电路设计..............................................................................52.2 单片机模块设计...........................................................................................52.2.1 单片机型号选择..................................................................................52.2.2 单片机模块电路设计..........................................................................62.3 按键模块设计...............................................................................................72.3.1 按键模块选择......................................................................................72.3.2 按键模块电路设计..............................................................................72.4 显示模块设计...............................................................................................72.4.1 显示模块选择...............................................
