接触USB 差不多也有一年...当然不是天天啦...刚开始就像看天书..对USB的枚举过程很难理解理..功夫不负有心人..最近突然好像有了感觉..经过几天奋战,终于成功应用PDIUSB12 和PIC16F73 做成一个USB鼠标-USB also has access to almost a year ... of course not every day啦... just started looking like a book from heaven .. right USB enumeration process is difficult to understand Li .. Hard work pays off .. seems to have a sudden feeling of .. After several days of fighting, and finally successful application PDIUSB12 and PIC16F73 made a USB mouse ..