【摘要】 本文介绍了一种用8031单片机实现高精度变闸门频率测量的方法，给出了该方法的测量原理及软、硬件组成。此测量方法可以在一个较宽的频率范围内，获得较高的测量精度。更多还原

【Abstract】 This paper introduces a new method of frequency measurement, It also gives out the measurement principle and the configuration of software and hardware for the instrument. The high accuracy can be obtained by the method in wide frequency band.更多还原