基于单片机STC89C51RC可编程定时计数器设计与实现.doc

基于的可编程定时计数器的设计与实现在是为了解决问题。此装置STC89C51RC完成了计时和计分的功能。本文详细地介绍了系统硬件与软件的设计过程，采用该装置可根据实际情况进行比分修改和时间的准确显示，能够完成开始和暂停等功能，具有倒计时和到时报警功能。该设计具有低功耗，可靠性，安全性以及低成本等特点。此类业余篮球赛的计时计分系统在中小学和大学篮球赛中具有很重要的推广意义。 关键词：单片机，LED数码管，篮球赛计时，篮球赛计分 The Design and Implementation of a Programable Timer and Counter Based on STC89C51RC Abstract: With the improvement of material life in current society, our spiritual and cultural needs are increasingly high. For example, in a variety of sports competition, people are not only concerned about the competitive level of the superb athletes, but also concerned about the competitive race ancillary facilities, such as all kinds of ball games scoring in the timing device. In this paper, time basketball scoring device, for example, describes a programmable timer counter based on STC89C51RC Design and Implementation. @Time basketball scoring device ,using SCM STC89C51RC timing and scoring functions,which can solve the basketball game problem and make the time exactly.This paper introduces the hardware and software design process, and people can use it to change the scores and the accuracy time according to the actual situations,and it can shows fictions that start ,pause ,countdown and alarm. The design has many advantages,such as low power consumption, reliability, security, and low cost. The timing scoring system,of such amateur basketball game in schools and universities, is very important in the promotion of significance. Key words: Single Chip Microcomputer , led nixie tube ,keeping scores and the time 目 录 第1章 前言 1 1.1选题意义 1 1.2 研究现状 1 1.3 论文所做工作 2 第2章 设计目标及方案 3 2.1 设计目标 3 2.2 设计方案 3 2.2.1系统构成框图 3 2.2.2器件选择 5 第3章 硬件电路设计 6 3.1 单片机STC89C51RC简介 6 3.1.1 STC89C51RC特性介绍 7 3.1.2 管脚说明 8 3.2 计时电路部分 10 3.2.1.振荡电路 10 3.2.2计时电路原理 11 3.2.3计时电路原理图 11 3.2.4 计时电路的工作原理 13 3.3计分电路部分 14 3.3.1 串行接口工作原理 14 3.3.2比分校正控制电路 15 3.3.3计分电路原理图 16 3.3.4 计分电路的工作原理 17 3.4球赛计时计分器的工作过程 19 3.4.1赛程时间设置 19 3.4.2赛程时间启动 / 暂停设置 20 3.4.3比分交换控制 20 3.4.4比分刷新控制 20 3.4.5计时计分显示 21 3.4.6赛程结束报警 21 3.