这是我初学习绘制波形发生器时所学习的一个程序，很难得，滚动显示，正弦波，矩形波，锯齿波都有，可调节幅值、频率，望大家深入研究。-This is my early learning to draw waveform generator learning by a program that is very rare, scroll, sine wave, square wave, sawtooth wave, adjustable amplitude, frequency, hope everybo