在计算机启动后，Windows打开这个程序，程序便会自动记录下开机的时间，当关机时，Windows关闭这个程序，程序会记录下关机的时间，并把它们以.txt格式保存下来。-After the computer starts, Windows opens the program, the program will automatically record the start time, when the shutdown, Windows closed the program, the program will record the time off, and put them in. Txt format saved.