能用单片机控制DDS芯片实现对输出信号频率/相位的调节，并具有调频、点频、扫频等工作模式，并可以通过液晶显示 -DDS chip can be used to achieve single-chip control of the output signal frequency/phase adjustment, and has FM, point frequency sweep mode, etc., and can be liquid crystal display

简易的信号发生器版图，可以实现正弦波发生，方波发生，调幅调频，并且通过LED显示出来-Simple signal generator layout can be achieved sine wave occurs, square wave occurs, AM FM, and displayed through the LED

这是一个实现信号的FM调制的文档，你可以快速实现信号的FM调制-This is a signal of the FM modulation to achieve a document, you can quickly implement FM modulation signal