摘要
采用单片机AT89C51作为系统控制单元,辅以适当的软、硬件资源完成以单片机为核心的频率计设计。介绍了内部计数器计数法、外部计数器计数法、测周期法3种测量频率的方法,并对每种设计方法进行了优缺点比较。
A cymometer use a singlechip AT89C51 as the system control unit with appropriate software and hardware resources is designed in this paper and three kinds of freguency measuring methods,internal counter countiong method,external counter counting method and measuring cycle method,are introduced too.The advantages and disadvantages on the three methods are compared at last.
出处
《青海大学学报（自然科学版）》
2009年第2期10-12,共3页
Journal of Qinghai University(Natural Science)
关键词
频率计
频率测量
单片机
cymometer
frequency measurement
singlechip
