频率波形发生器，通过按键来选择要输出的波形，可选择的种类是一定的，有锯齿波，三角波，方波，正弦波等-Frequency waveform generator to select the waveform to be output through the button, you can choose the kind is certain, there are sawtooth, triangle wave, square wave, sine wave, etc.

基于FPGA的可调幅度频率的正弦波、三角波、锯齿波、矩形波发生器-FPGA-based adjustable amplitude sine wave frequency, triangle wave, sawtooth, square wave generator