采用菲利普的USBD12芯片，结合89S52实现USBV1.1的通信。这个程序是运行在51上的程序。采用KEIL编译。并用采用了TinyRTX-using the USBD12 chip, combining 89S52 achieve USBV1.1 communication. The program is running in 51 on the procedure. Using KEIL compiler. And with the use of TinyRTX

51单片机控制D12 USB器件的完整源代码, keil工程文件,可以在周立功开发板上运行-51 MCU control D12 USB device complete source code, c51 engineering documents, in the weeks running meritorious development board

USB与串口通信的程序中单片机的源码，用keil编写，采用51单片机.-USB and serial communication program source MCU, using keil prepared, using 51 single-chip microcomputer.