The measuring precision of frequency meter based on traditional frequency measuring principle lowers with the descent of the measured frequency ,so there are great limitations in practical application. According to the analysis of equal precision frequenc
谈学.基于单片机的等精度频率计设计[J].重庆工商大学学报(自然科学版),2004,(2): TAN Xue. Design of equal precision frequency meter based on microcontroller[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2004,(2):