摘要
介绍了频率测量的原理,给出一个单片数字频率计设计实例,采用从左到右的设计方法,以AT89C52单片机作为系统的主控部件,实现整个电路的测试信号控制、数据运算、和数码管显示输出。本系统具有结构紧凑、体积小、可靠性高、测频范围宽、精度高等优点。
This paper introduces the theory of frequency measurement, gives an example of numeral frequency meter by AT89C52 SCM ,uses design methods from left to right, and use AT89C52 microcontroller as a system of control components, achieves the entire circuit test signal control, data computing, and digital display output. The system is compact, small size, high reliability, frequency measurement range, high precision advantages.
出处
《电子质量》
2008年第7期39-41,共3页
Electronics Quality
