目 录1 绪论...............................................................................................................................................21.1 课题研究目的.................................................................................................................21.2 研究现状.........................................................................................................................31.3 本文的主要工作.............................................................................................................42 系统方案设计...............................................................................................................................52.1 总体方案设计与分析.....................................................................................................52.2 主控制器方案.................................................................................................................52.3 显示方案.........................................................................................................................63 系统电路设计...............................................................................................................................63.1 主控制器电路.................................................................................................................63.1.1 单片机电路........................................................................................................63.1.2 晶振电路............................................................................................................83.1.3 复位电路............................................................................................................83.2 显示电路.........................................................................................................................93.3 按键电路..........................................................................................................................
