1、I 基于 STC89C51RC 的可编程定时计数器的设计与实现 摘要 在当今社会随着物质生活的提高，人们对精神文化的需求也越来越高。 比如 在各种体育竞技中，人们不仅关注运动员的精湛的竞技水平，也关注竞技比赛 的一些辅助设施，比如各种球类比赛中的计时计分器。本文以篮球赛计时计分 器为例，介绍了基于 STC89C51RC 的可编程定时计数器的设计与实现。篮球赛计 时计分器是为了解决篮球比赛中时计分与计时准确的问题。此装置利用单片机 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
2、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 II 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
3、 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
4、 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
