本论文以凌阳单片机和PDIUSBD 12构成USB设备控制端，对usb相关技术和USB设备驱动程序的编写进行研究。
This thesis takes Lingyang chip microcomputer and USB chipset PDIUSBD12 as the core of controlling device, and makes a systemic study of USB related techniques and USB interface drive program.
又因午时为“阳辰”，所以端五也叫“端阳”。
Noon because of the "Chen-yang", so end of the five also called the "Dragon Boat Festival.
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