单片机毕业设计-篮球比赛倒计时计分器

摘 要篮球竞赛计时计分器是为了解决篮球竞赛时计分与计时准确的问题。此装置利用单片机 AT89C51 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，采纳该装置可根据实际情况进行比分修改和时间的准确显示，具有低功耗，可靠性，安全性以及低成本等特点。关键词：单片机，篮球赛计时，篮球赛计分 AbstractAlong with the technical and quick development in electronics, appear with the large-scale integrated circuit especially, give mankind the life brought the changes of the root. The coal gas reports to the police the system publishes, scribing the electronics measure the instrument walked into the arithmetic figure turns the ages its function is strong, the function is well-found, technique forerunner, will quickly technical development in science.In the hardware aspect, except the monolithic outside the aircraft, uses ten seven section of led nixie tube s to carry on the demonstration, LED uses is the motionless scanning demonstration, uses the 74LS21 chip to carry on the actuation.With the coal of compilation, we can get the functions of this design such as keeping scores, recording the time, and that we can alternate with the scores of both teams. It’s practical and simple to accomplish.Key words: Single Chip Microcomputer ,led nixie tube ,keeping scores and the time 目 录第 1 章 引言.........................................................11.1 背景知识介绍....................................................11.2 设计意义.......................................................21.3 设计目的.......................................................2第 2 章 系统硬件介绍.................................................32.1 MCS-51 单片机简述..............................................32.1.1 单片机 AT89C51 简介..........................................32.1.2 主要特性.........................................