定时计数器实现单片机精确延时  

Implementation of accurate delay of microcontroller unit using timing counter

作　　者：张良[1] 徐雷[1] 

机构地区：[1]亳州师范高等专科学校理化系,安徽亳州236800

出　　处：《韶关学院学报》2014年第2期14-19,共6页Journal of Shaoguan University

基　　金：物电实验实训中心项目(2013WDSY01);高职应用型IT人才培养校内实训基地建设研究(JD10101);自动化创新团队项目(2013BZKJCX03)

摘　　要：定时计数器在单片机应用中非常广泛,精确延时是定时计数器一个重要应用.分别用查询法、中断法以及查询和中断相结合的方法实现1 ms的延时量,使LED灯按照1 Hz频率闪烁,总结定时计数器在定时方面的特点,加强学生对单片机定时计数器的理解.Timing counter has been used very extensively in the microcontroller application, and accurate delay is one of the important uses of timing counter. Taking flashing LED lamps at a 1 Hz frequency lighted by 1 ms delay, which concludes inquiry method, interrupt method, and combination of inquiry and interrupt method, and the characteristic of timer/counter in timing aspect are summarized to help students enhance understanding of the timer/counter of mieroeontroller unit.

关 键 词：定时计数器 单片机 精确延时 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]