Introduction - If you have any usage issues, please Google them yourself
In.txt from the input file such as read data (the current directory can be the best can be specified by the user), the com1 port send (spontaneous self-admission), received the contents into the output file, such as out.txt (can be the current directory, it is best can be specified by the user). Requested after the start button to send, and start running, sent after the end of time, and display the time spent sending (minutes: seconds: milliseconds).