用8253/8254实现对事件发生次数的统计 |
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引用本文: | 卢建华.用8253/8254实现对事件发生次数的统计[J].武汉科技大学学报(自然科学版),2003,26(2):194-196,217. |
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作者姓名: | 卢建华 |
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作者单位: | 武汉科技大学计算机学院,湖北,武汉,430081 |
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摘 要: | 利用可编程定时/计数器8253/8254在PC机上设计一个对事件发生次数进行统计的微机系统,可以实现对在指定时间内发生次数较多的事件进行次数统计,并以十进制数的形式在CRT显示器上显示出来。介绍了该系统的硬件设计原理和软件编程思路。
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关 键 词: | 定时/计数 脉冲信号 减l计数 自动重新装载 |
文章编号: | 1672-3090(2003)02-0194-04 |
Using 8253/8254 to Count How Many Times an Event Happens |
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Abstract: | A system to count how many times an event happens is designed by using the timer/counter 8253/8254 on PC. The system can enumerate the occurred times of an event which happens many times in a specified period and display the result in the decimal number. The hardware designing and the software programming have been introduced in this paper . |
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Keywords: | timing/counting pulse signal decrement count automatic reloading |
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