篮球比赛计分系统的设计

篮球比赛计分系统的设计(论文9000字)
摘要
随着体育运动的发展，篮球比赛正越来越受到大家尤其是青少年的喜爱。为了便于记录篮球比赛时双方的比分，设计了一个较为简易篮球比赛计分系统。该系统由数字电路的基本知识，用电路元器件搭建而成。该系统分由计分电路和12分钟倒计时电路组成。计分电路主要实现加一、加二、加三分并通过数码管显示该队总得分的作用。为防止比赛中多加分数的情况，该计分器还得具有减分功能。由于所用芯片74LS192既能实现累加功能，也能实现递减功能，所以只需用加减置换开关控制加减分即可。12分钟倒计时电路由4片74LS192芯片组成，其中两片计算分钟，两片计算秒。
本设计过程中采用Multisim软件对电路进行仿真，功能正确后，实现硬件电路的焊接。经实际测试能完成预定指标。
关键词： 篮球计分系统  数电  Multisim仿真

Basketball Scoring System
Abstract
With the development of sports, basketball games become more and more popular with people especially young people. In order to record the bilateral score, I design a relatively simple basketball scoring system. The system consists of the basic knowledge of digital circuit, and we use circuit components to built it. The system is divided into a scoring circuit and 12 minutes countdown circuit. Scoring circuit mainly realizes plus one, plus two, plus three points and display the team total score through the digital tube. To prevent the situation that give more scores to one team, the scoring device also have a reduction function. Because the chip 74LS192 not only can achieve the accumulation function, also also can realize the decrease in function, we just need a modified replacement switch.
The design use Multisim as a simulation software. If the function is correct, we can weld the hardware circuit. Through the practical test, it can complete the intended target.
Keywords: basketball scoring system ; Digital circuits; Multisim simulation

目     录
摘要    I
Abstract    II
目     录    III
第一章 绪论    1
1.1 引言    1
1.2 设计意义    2
1.3 系统可实现的功能    2
第二章 篮球比赛计分系统计分电路设计    3
2.1 计分电路的总体设计框图    3
2.2 时钟信号电路    4
2.3 加减分电路    5
2.4 加减转换电路    9
2.5 计分电路    9
2.6 译码及显示电路    11
2.7 计分器总电路图    14
第三章 篮球比赛计分系统倒计时电路设计    16
3.1 秒脉冲信号产生电路    16
3.2 倒计时电路设计    17
3.3 篮球计分系统倒计时电路总电路图    20
第四章 硬件电路制作与调试    21
4.1 硬件电路制作    21
4.2 硬件调试    21
第五章 总结    23
致谢    24
参考文献    25