labview的图表控件能很方便的显示各种波形图， 而VB中没有此类控件。本例就是讲VB调用Labview图形图表控件例程。-LabVIEW control chart can easily display a variety of waveforms, and the absence of such controls in VB. VB stresses in this case is called Labview graphical chart control routines.

mp3等音频刻录及播放，有波形图的，可制作mp3播放器 -wav, mp3 and other audio recording and playback, there are waveforms, and can be made mp3 player