Serial port, serial port, and now most of the hardware device adopts a serial port are connected to the <a href=”http://www.precisetool.cn/">computer technology</a> , so the serial port application development is becoming more common. For example, in the case of a computer is not installed card, will be some information on the unit data transfer to another computer, then use a serial port communication can be achieved. <a href=”http://www.precisetool.cn/">Run the program</a> , be in “send data” in the text box input data to be transmitted, click the “send” button, will transmit the data sent to the selected port; Click “receive” button, the transfer of data is received “receiving data” in the text box.