本科论文目 录摘 要....................................................................................................................IAbstract.....................................................................................................................II引 言...................................................................................................................31 硬件选择与设计...................................................................................................51.1 总体设计及方案选择.................................................................................51.1.1 主控单片机选择................................................................................51.1.2 传感器模块选择................................................................................61.1.3 显示器模块选择................................................................................61.2 系统总体设计.............................................................................................72 系统硬件电路设计...............................................................................................82.1 系统主电路设计.........................................................................................82.1.1 主体电路设计...................................................................................82.1.2 单片机最小系统设计.......................................................................82.2 单元电路设计...........................................................................................102.2.1 传感器单元.....................................................................................102.2.2 显示屏单元.....................................................................................112.2.3 数据储存器单元.............................................................................132.2.4 蜂鸣器单元.....................................................................................152.2.5 矩形键盘单元..........
