程序利用编写高层应用程序与USB接口通信。读者有必要了解主机是如何识别USB设备以及USB工作的基本原理。-Procedures for the use of the preparation of high-level applications and USB interface communication. Readers need to understand how to identify the host is a USB device and USB on the basic princ

USB代码，原始程序，可以修改，对学习很有帮助-USB code, the original program can be modified on the very helpful