摘要随着科技的快速发展，我们进入了单片机智能化的世界。现在大部分电子系统的 电路由复杂化变得简单了、功能由欠缺变得齐全了，如果把以前的电子系统看成是一 个古老的电子系统的话，那么智能化的电子系统就是一个新生的电子系统。随着新时 代的到来，单片机与串行接口的结合逐渐的应用到各种电子系统当中。73814

本次设计在硬件上主要是以 STC89C52 单片机作为核心控制元件，使用 LCD1602 作为显示器件，软件上以 C 语言作为编程语言，用 KeilC51 对所编程序进行编译， 在 Protues 软件下仿真,最后对 PCB 线路板进行元器件焊接以及功能的调试。本次设 计在以 STC89C52 系列单片机为最小系统的基础上扩展了一些实用性强的外围接口， 更加熟悉了单片机的应用，还有对 LCD1602 液晶显示的结构以及独立按键的工作原 理更加明白，本系统可以实现计时和显示 A/B 队的分数（计分），比赛的开始和暂 停，还可以对两队需要的分值进行设置，进攻时间 24 秒清零，复位，鸣笛，亮灯警 示等功能。这样系统设计完成后具有价格较低廉、性能很稳定、操作起来很方便、容 易携带等优点，更加适合各个场合比赛所使用。

该论文有图 33 幅，表 1 个，参考文献 27 篇。

毕业论文关键词：篮球比赛显示 键位控制 单片机

Design of Basketball Competition Timer and Scoring Device Based on 51 Microcontroller

Abstract With the rapid development of science and technology, human beings are  entering into a microcontroller intellectualization world. At present, originally complicated circuits of most electronic systems turn simple and originally defective functions turn complete. If original electronic system is compared to an old electronic system, then intellectualized electronic system is a new electronic system.With the advent of the new era, the combination between microcontroller and serial interface has been gradually applied into a variety of electronic systems.

In terms of hardware, this design mainly uses STC89C52 microcontroller as the core control component and LCD1602 as the display component. In terms of software, this design adopts C Language as the programming language and utilizes KeilC51 to debug the compiled program under the simulation context of Protues software. At last, PCB circuit board will receive components and parts welding and function debugging. On the basis of the minimum system of STC89C52 microcontroller, this design expands some peripheral interfaces with strong practicability and has a better command of the application of microcontroller. In addition, this design further clarifies the structure of LCD1602 liquid crystal display and the working principle of separate button. In this way, this system can display the timing, scoring of A/B team and beginning and suspension of the competition. Apart from score setting made according to team requirements, this system also  has multiple functions such as shot clock 24-second resetting, repositioning, buzzing and lighting warning. Once finished, such system design will have advantages over cheap price, stable performance, convenient operation and portable nature, more applicable for various competitions.

Key Words: basketball competition display button control microcontroller

目 录

摘 要 I

Abstract II

目录 III

1 绪论 1

1.1 研究背景 1

1.2 研究现状