课程设计报告---四人抢答器

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1、数字电子技术课程设计报告课程设计报告设计题目四人抢答器专业******班级******姓名******学号******指导教师******提交日期******摘要-19-数字电子技术课程设计报告在许多比赛活动中，为了准确、公正、直观地判断出第一抢答者，通常设置一台抢答器。通过抢答器的数显，灯光和音响等手段指示出第一抢答者。同时还可以设置定时、记分犯规及奖惩等多种功能。本设计采用手动抢答的方式，有人抢答后，系统自动封锁其他人的抢答按钮，使其不能再抢答，从而实现抢答功能。数字抢答器由主体电路与扩展电路组成。优先编码电路、锁存器、译码电路将参赛队的输入信号在显

2、示器上输出；用控制电路和主持人开关启动报警电路，以上两部分组成主体电路。通过定时电路和译码电路将秒脉冲产生的信号在显示器上输出实现计时功能，构成扩展电路。经过模拟仿真，下载到开发板等工作后数字抢答器成型。关键字抢答电路定时电路报警电路时序控制-19-数字电子技术课程设计报告目录摘要··········································································································1第1章概述···························

3、······························································3第2章课程设计任务及要求····························································42.1设计任务···············································································42.2设计要求··················································

4、·····························4第3章系统设计··············································································53.1设计方案················································································53.2系统设计·····································································

5、············53.2.1结构框图及说明·························································53.2.2系统原理图及工作原理·············································63.3单元电路设计············································································7第4章软件仿真···········································

6、······································12-19-数字电子技术课程设计报告4.1仿真电路图··············································································124.2仿真过程··················································································124.3仿真结果······································

7、············································14第5章安装调试·················································································145.1安装调试过程··········································································145.2故障分析····················································

8、······························15第6章心得体会·