将10Khz的输入信号经过分频得到两路互补的方波信号，方波信号的频率由分频计数初值决定。然后将分频后的方波进行移相，从而得到另外两路方波信号，移相的大小也由计数器的的初值决定。-After the 10Khz frequency input signals are two complementary square wave signals, square wave signal frequency by a frequency count of initial decision. And the