实现记录显示硬件电路中的I/O口电平波形输出工具，最大可记录50组波形,可以很方便地将任何15种波形显示比较。-achieve records show circuit of hardware I / O-level waveform output tools, the largest group can record 50 waveform, it is very easy to any waveform display 15 more.