得到了频率和初始相位均可以任意改变的正弦模拟信号，能提供从50KHz到50MHz共1024个频率点，且频率相位均为任意可调-Received frequency and initial phase may be arbitrarily changed sinusoidal analog signals from 50KHz to 50MHz can provide a total of 1024 frequency points, and the frequency of the phase a

用C语言生成的一个低频信号发生器，可调频率，可扫描键盘，选择波形-Using C language generated a low frequency signal generator, adjustable frequency, scan the keyboard, select the waveform