说明：  这个是东软的一个培训文档，哈哈，是关于示波器的使用的，个人觉得还是非常不错的啦，需要的朋友可以下载下来看看。
(This is a training Neusoft documents, ha ha, is about the use of oscilloscopes, personal feel that you are still very good, need to see if friends can download them.)