用qt做的波形显示,只是一个示例，显示的是一个正弦波，有刻度表示，如果有人需要，可以增加功能-Qt to do with the waveform display, but one example, shows a sine wave, with scale indicated that, if someone needs, can increase the function

DOS环境下显示三角波和正弦波，能实现两种波形的切换-DOS environment, shows triangular wave and sine wave

本程序是用Qt做的显示三种基本波形的Demo。 三角波，方波，正弦波。可以启动和停止，能改变幅值和偏移量。-This procedure is to do with Qt, the Demo show the three basic waveform. Triangle wave, square wave, sine wave. You can start and stop, change the amplitude and offset.

DOS环境下显示三角波和正弦波，能实现两种波形的切换-DOS environment, shows triangular wave and sine wave