This is a program for the PC serial port operation, the Example method applied to the operation of the ID card reader, which is the main method, but the display is in the background, in the foreground display is TestToComm method, but It has some BUG, ​ ​ is that the thread does not handle well, If anyone interested to look at, to help improve thanked in this E-mail: wangyunfu2011@126.com

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