目录摘要................................................................................................................................1Abstract..........................................................................................................................21、设计内容..................................................................................................................32、系统整体设计原理..................................................................................................42.1 排队系统的基本功能......................................................................................42.2 系统工作原理..................................................................................................42.3 软件操作流程..................................................................................................53、电路硬件模块设计..................................................................................................63.1 业务调度模块设计..........................................................................................63.1.1 时钟电路...............................................................................................63.1.2 复位电路...............................................................................................73.2 排队子系统模块设计......................................................................................83.3 工作人员服务模块设计..................................................................................83.4 业务提示模块设计..........................................................................................83.4.1 LCD 液晶屏单元..................................................................................83.4.2 语音播放单元.......................................................................................93.5 电源设计........................................................................................................104、整体电路图....................
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