摘要
分析了8253的工作时序,提出了8253在零事件计数时存在的问题,并提出了一套有效的解决方案。利用该方案,给出了扩展2片8253实现4通道脉冲计数的软、硬件实现方法。
By analyzing the work timing of 8253, this article points out the existing problem when 8253 is working on the counting mode and have designed an effective settlement. Using this settlement, this article introduces the hardware and software application of a four - channel pulse - counting system.
出处
《机械与电子》
2007年第8期34-36,共3页
Machinery & Electronics
关键词
8253
零事件
多路计数
单片机
8253 zero event
ulticenter pulse - counting
singlechip
