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- 该代码为数字频率计的c程序,利用stc15系列单片机,可实现对信号的频率测量,测量范围在1-11MHZ 低频是采用测周法,高频时采用测频法,高精度-The code for the digital frequency meter c program, using stc15 series single chip microcomputer, which can realize the signal frequency measurement, measurement range between