单片机构成的发生器可产生锯齿波、三角波、正弦波等多种波形，可通过按钮设定所需要的波形频率，并在LED上显示频率、幅值电压-SCM constitutes a generator can produce sawtooth, triangle, sine and other waveforms required by the button to set the waveform frequency, and the LED display frequency and amplitude voltage