Based on the plat of C167,it explains the theory that C167 is employed to measure the frequency,then gives a method that traces the frequency of the signal in the capture interrupt.

• 针对这一问题,以西门子的C167单片机为硬件平台,在阐述了其频率测量的原理后,采用图表结合的方法,提出一种新型的频率滑差计算方案。