This is a study on a number of USB to serial abroad circuit, there is no serial port for laptop and want to experiment Friend Singlechip blessed,

Packet : 119128643usb.rar filelist
USB转换串口\11.bmp
USB转换串口\200713101012400.pdf
USB转换串口\2008293268478.jpg
USB转换串口\20082934245427.jpg
USB转换串口\20082934245991.jpg
USB转换串口\315.gif
USB转换串口\323502338429.jpg
USB转换串口\9153169887.gif
USB转换串口\无标题.bmp
USB转换串口

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