本科毕设论文--基于单片机的篮球计时计分器设计.docVIP

毕 业 论 文（设 计） 题 目 基于单片机的篮球计时记分器设计 内 容 提 要 随着单片机在各个领域的广泛应用，许多用单片机作控制的球赛计时计分器也应运而生，如用单片机控制LCD液晶显示器的计时计分器，用单片机控制LED七段显示器的计时计分器等。 本设计以基本篮球规则为依据，可对篮球比赛实现实时控制，解决问题 关键词 单片机 ；篮球赛计时； 篮球赛计分； 显示 Design of Timing and Scoring of Basketball Competition Based on microcontroller Author: yang lu Tutor: wang dan Abstract With a wide range of SCM applications in various fields, many with a sinle chip timing for the control of the game scoring device have emerged, such as liquid crystal display LCD with MCU control the timing of scoring device, LED seven segment display with MCU timing control points and more. This design based on the basic rules of basketball, the game of basketball can achieve real-time control, total points and timing can be solved in the game of basketball. The device includes hardware design and software programming, mainly based on AT89C51 MCU as the core components, and programmed to control the LED segment digital tube for the display of the game time scoring，Part time using CD4511 (seven segment BCD decoder) for hardware decoding; scoring part is CD4094 (8-bit shift register storage bus) serial port expansion, monitor port, and use 74LS21 (Dual four-input AND gate) to achieve the score of the refresh function. Buzzer to sound the alarm part of the device used. The system is set up with the schedule from time to time, schedule time to pause, refresh in time A, B, and after the two sides achieved a temporary success functions. It is inexpensive, stable performance, easy to operate and easy to carry and so on. A wide range suitable for all types of schools or small groups as time-points race. key words MCU; basketball time; basketball scoreboard; Show 目 录 内 容 提 要 I Abstract II 第一章 引言 1 1.1 背景知识介绍 1 1.2 设计意义 1 1.3 设计目的 2 第二章：系统设计方案 3 2.1系统构成框图 3 2.2 基本功能介绍 4 第三章 系统硬件设计 5 3.1系统硬件部分组成 5 3.2器件的选择 5 3.3系统硬件介绍 5 3.3.1单片机AT89C51 5 3.3.2显示器及其接口 10 3.3.3 CD4094芯片介绍 12 3.3.4 74LS21芯片介绍 12 3.3.5 报警器 13 3.4计