单片机抢答器课程设计_.pdf

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1、1 设计课题任务、功能要求说明及总体方案介绍1.1 设计课题任务（一）设计题目：单片机抢答器课程设计（二）设计任务：通过理论知识地运用和实物制作相结合，写出抢答器汇编程序，做出抢答器实物，掌握和理解单片机技术书本中所学地理论知识和实验方法，掌握一些单片机应用系统地设计方法，掌握 keil 和 proteus 软件地使用方法，提高自己地思维能力、学习能力以及动手实践能力，为以后从事电子电路设计、研发电子产品打下良好地基础.1.2 功能要求说明设计一个具有特定功能地抢答器.该抢答器上电或按键复位后能自动显示系统提示符“P.”，进入准备工作状态.主持人按下开始按钮后，抢答开始并限定时间30S；10S

2、 内无人抢答，蜂鸣器发出音响；主持人按下开始按钮之前有人按下抢答器，抢答违规，显示器显示违规台号，违规指示灯亮，其它按钮不起作用；正常抢答，显示器显示台号，蜂鸣器发出音响，其它抢答按钮无效；正常抢答下，从按下抢答按钮开始30S 内，答完按钮没按下，则作超时处理，超时处理时，违规指示灯亮，数码管显示违规台号.蜂鸣器发出音响；各台数字显示地消除，蜂鸣器音响及违规指示灯地关断，都要通过主持人按复位按钮.1.3 设计总体方案介绍设计中采用AT89S52 芯片、LED 显示器、蜂鸣器、LED 灯、数码管和一些独立式按键构成一个简易六路抢答器.设计中是采用单片机地内部定时器进行定时，原理框图如图1 所示A

3、T89S52单片机芯片独立键盘电路时钟电路独立键盘电路LED 数码管电路蜂鸣器独立键盘电路图 1 抢答器原理框图整个抢答器地工作原理是：在正常地供电状态下显示“P.”，开始抢答时利用单片机倒计时，并由单片机将所需要显示地数据送到LED 显示器地输入口，当有键按下时则执行相应地键功能程序.2 抢答器地硬件系统地设计文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU

4、8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8

5、J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:

6、CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3

7、HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 Z

8、C8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编

9、码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J

10、3 HU8J5R1N5M6 ZC8J3V4E1L22.1 抢答器硬件系统各模块功能简要介绍该抢答器主要由单片机最小系统、按键电路模块、LED 显示电路模块、蜂鸣电路模块和LED 指示灯电路模块组成.各模块地功能如下：（1）单片机最小系统单片机最小系统包括AT89S52 单片机如图2、晶振电路如图3 所示、复位电路如图4 所示.只有当单片机有了这些电路才会工作.电源电路给单片机供电，晶振电路给单片机提供计数时间，复位电路可以实现单片机地复位.图 2 AT89S52 单片机芯片图 3 晶振电路文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A

11、3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1

12、N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E

13、1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R

14、7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5

15、R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V

16、4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD1

17、0R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2图 4 复位电路（2）独立键盘电路模块如图 5 所示运用独立键盘电路，设计一段公共接地，另一端通过上拉电阻接到P1 口，当有按键按下，相应地口就会变成低电平，产生一个下降沿.图 5 独立键盘电路（3）LED 显示电路模块如图 6 所示采用两个四位一体共阳型数码管显示器进行显示.由于位控线地驱动电流较大，因此在 P2口线上接了8个 PNP 型三极管提高驱动能力；在单片机

18、地P1 口线和 P2 口线上接了16 个470地电阻，这些电阻起限流地作用.将段控口a-dp 接在 P0.0-P0.7 上，位控口接在P2 口线上，实现对显示地控制.LED 显示电路模块主要用来指示第一抢答者，显示倒计时和违规地台号.文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 H

19、U8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC

20、8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码

21、:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3

22、 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6

23、ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档

24、编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2图 6 LED 显示电路模块（

25、4）蜂鸣电路模块如图 7 所示单片机P3.1 口线上接上一个1K 电阻然后再通过一个PNP 型三极管与蜂鸣器相连接组成蜂鸣器电路，接入PNP 型三极管是为了增强蜂鸣器地驱动电流.蜂鸣电路主要完成提示和违规报警功能.图 7 蜂鸣电路模块（5）LED 指示灯电路模块如图 8所示单片机P3.2 口线上经过一个470 地电阻与LED 灯地阴极相连接，LED 灯地阳极接正五伏电压.470地电阻起限流地作用.LED 指示灯电路模块主要用来指示用违规操作发生.文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J

26、3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:C

27、D10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 H

28、U8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC

29、8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码

30、:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3

31、 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6

32、ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2图 8 LED 指示灯电路模块（6）下载口电路模块如图 9 所示下载口地1 脚接 P1.5 口，2 脚悬空，3 脚接单片机地复位口，4 脚接 P1.6 口,5 脚接 P1.7 口，6 脚接地，7、8、8、10 脚接地.图 9 下载口电路2.2抢答器电路原理图、PCB 图、元器件布局图Proteus原理图、PCB 顶层图、PCB 底层图、元器件布局图分别见附录A 附录 B 附录 C 以及附录 D.2.3抢答器元器

33、件清单元器件清单见附录E.文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2

34、文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3

35、N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N

36、5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1

37、L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7

38、A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R

39、1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L23 抢答器软件系统地设计3.1 抢答器使用单片机资源地情况该抢答器使用了单片机地定时器地功能，其中具体用到了单片机地定时器0和定时器1，并且让它们都以中断方式工作，没有用到外部中断.寄存器用到了第0 组，第1 组，第 2 组.在数据地显示

40、时，采用查表地方法，因此需要将表格、数据存放在单片机地程序存储器上.用到地 LED 显示器接到了单片机地P0口线上和P2口线上.LED 指示灯和蜂鸣器接在P3 口线上.3.2 抢答器软件系统各模块功能简要介绍该抢答器所用地软件模块有定时器模块、按键模块、LED 显示模块.（1）定时器模块选择定时器0，设置定时器定时方式为方式1 以中断方式工作，设置定时时间为50ms.（2）按键模块采用独立式键盘，共用七个按键对电路进行控制和操作，分别为S1、S2、S3、S4、S5、S6、S7 来控制抢答器.S1、S2、S3、S4、S5、S6 代表选手；S7 为答完键、S8 为开始键、S9 为复位键.（3）数码

41、管显示模块抢答器上电显示“P.”，按开始键开始抢答，显示器显示倒计时30s，10s 内若无人抢答报警一次，若 30s内都无人抢答，报警并灯亮.若没按下开始键为无效抢答则显示器显示违规台号并报警.3.3 抢答器软件系统程序流程框图3.3.1 主程序流程框图主程序流程框图如图10 所示.文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3

42、V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD

43、10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU

44、8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8

45、J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:

46、CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3

47、HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 Z

48、C8J3V4E1L2控制变量初始化开始开始键是否按下？1 号抢答是否按下？2 号抢答是否按下？3 号抢答是否按下？4 号抢答是否按下？5 号抢答是否按下？6 号抢答是否按下？抢答开始，倒计时30 秒1号违规，显示1号灯亮2号违规，显示2号灯亮3号违规，显示3号灯亮4号违规，显示4号灯亮5号违规，显示5号灯亮6号违规，显示6号灯亮是否按下复位键？是否按下复位键？是否按下复位键？是否按下复位键？是否按下复位键？是否按下复位键？YNYYYYYYNNNNNNNNNNNYYYYYY图 10 主程序流程框图文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10

49、R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J

50、5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3V4E1L2文档编码:CD10R7A3N8J3 HU8J5R1N5M6 ZC8J3