目录摘要第1章引言..................................................................................................................-1-1.1设计概述.................................................................................................................-1-1.1.1设计背景.........................................................................................................-1-1.1.2设计要求.........................................................................................................-1-1.2设计目标与意义.....................................................................................................-2-1.3章节安排.................................................................................................................-2-第2章方案论证与选型..................................................................................................-3-2.1设计任务分析.........................................................................................................-3-2.2方案论证与选择.....................................................................................................-3-2.2.1方案一.............................................................................................................-3-2.2.2方案二.............................................................................................................-3-2.2.3方案三.............................................................................................................-3-2.3方案确定.................................................................................................................-3-第3章硬件电路设计......................................................................................................-5-3.1原理分析.................................................................................................................-5-3.1.1抢答器的基本组成.........................................................................................-5-3.1.2抢答器的概述..................................................................................