M篮球比赛计时器
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密 惠 保
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本文主要介绍：篮球比赛计时器。本文首先介绍单片机的相关知识，对单片机进行相应的研究，并将其与74HC595串行显示电路配合使用。本电路主要核心是AT89S51，利用软件和硬件的结合实现开机自动置节计数器为第一节，节计时器为12分00秒，24秒违例为24秒。用数字显示篮球比赛当时节数，每节时间及24秒的倒计时，采用单片机串行显示。最后，本文会详细叙述此电路的安装与调试，并对调试过程中出现的问题做简要说明。
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关键词 AT89S52单片机；74HC595；XXX
Abstract this article mainly introduced: Basketball game timer. This article first introduced that monolithic integrated circuit's related knowledge, conducts the corresponding research to the monolithic integrated circuit, and its and 74HC595 serial display circuit coordination use. This electric circuit main core is AT89S51, realizes using the software and hardware's union starting sets at the festival counter for first, the festival timer is 12 minute 00 second automatically, 24 second case of breaching the rules is 24 seconds. With the digital demonstration basketball game at that time the pitch number, each time and 24 second countdown, used the monolithic integrated circuit serial demonstration. Finally, this article will narrate this electric circuit's installment and the debugging in detail, and to will debug the question which in the process will appear to give the briefing。
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key words 89S52 monolithic integrated circuit; 74HC595; XXX
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