张家界航空工业职业技术学院目录目录..................................................................................................................................................1摘要..................................................................................................................................................2第1章引言...................................................................................................................................31.1课题的背景.......................................................................................................................31.2课题的设计目标与意义...................................................................................................31.3课题的章节安排...............................................................................................................3第2章系统的方案论证与选型...................................................................................................52.1设计任务分析....................................................................................................................52.2单片机芯片的选择............................................................................................................52.3按键控制模块的选择........................................................................................................62.4时钟模块的选择................................................................................................................62.5温度采集模块的选择........................................................................................................72.6显示模块的选择................................................................................................................72.7主要芯片介绍....................................................................................................................8第3章硬件电路设计.................................................................................................................213.1硬件电路总体设计....................................................................