产生典型的几种信号波形，如方波，三角波，白噪声等。-A typical signal waveforms generated several, such as square, triangle, white noise.

基于LABVIEW信号发生器 可以产生正弦、方波、三角波、锯齿波四种波形-It can generate a sinusoidal signal generator based on LABVIEW, square, triangle and sawtooth waveforms