第1页共16页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共16页声光显示智力竞赛抢答器目录第1章绪论··················································································21．1前言······················································································31．2单片机的基础知识···································································41．2．1单片机的介绍·····································································41．2．2单片机的历史·····································································51．2．3单片机的应用领域·······························································61．2．4单片机的种类·····································································7第2章设计步骤···········································································82．1设计要求···············································································82．2抢答器的硬件系统设计·····························································82．2．1系统整体方案设计····························································82．2．2系统硬件组成··································································92.3抢答器的软件系统设计······························································92．3．1数码显示软件设计····························································92．3．2音频输出软件设计····························································2．4．抢答器的电路原理图设计·······················································2．4．1电源电路设计··································································2．4．2复位电路设计··································································2．4．3时钟电路设计··································································2．4．4输入模块电路设计····························································2．4．5显示模块电路设计···························································...
