完整的包含spwm的波形生成与实现，代码可以在ccs3.3上顺利编译-Contains spwm complete waveform generation and realization, the code can be successfully compiled on ccs3.3

用VB生成任意频率的波形和相应的WAV文件（默认保存在C:TEST.WAV）可以做信号发声之用-Using VB to generate arbitrary waveforms and frequencies corresponding WAV files (by default stored in C: TEST.WAV) signal audible purposes can be done

本软件基于C++6.0 MFC编写生成，主要功能为从USB端口实时接收并显示数据或波形，显示电压范围0-5V，电压范围可调整，可选着输入com端口，可以将数据保存为txt文档，且可以从txt文档中回读数据并显示。文档中有我的联系方式。-From the USB port real-time receiving and display the data and waveform display, 0-5V voltage range input, optional COM port, data c