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 1-11 MHZ　Low frequency is the weeks measurement method is adopted, high frequency when using the method of frequency measurement, high accuracy