USB的优点相信大家都知道了，而且还很赚钱，嘿嘿，这里就不多说，不懂的就去看看书吧，这里要说的是如何快速掌握USB技术。这篇文章一方面是我对USB学习的一个总结，另一方面是为了方便初学者入门学习。-The advantages of USB I believe we all know, and still make money, here is not to say, go take a look at Shuba do not understand, here is how to quickly master the USB technology. This article on the one hand is the USB learning a summary, on the other hand is for the convenience of the beginner learning.