D12的一个非常实用的上位机应用程序源代码，可以直接用或在此基础上增加功能-D12 a very useful PC application program source code, or can be directly used on the basis of functional

d12的测试程序 PDIUSBD12 是一款性价比很高的USB 器件它通常用作微控制器-D12 tests the USB device PDIUSBD12 is a high performance it is often used as a micro controller