条码枪模拟键盘源程序, 接收串口连接的条码枪的数据，通过模拟键盘输入到程序中，这样就不需要改动程序即可和条码枪接口-Barcode guns source analog keyboard, serial port connected to receive data from bar code gun, by simulating keyboard input to the process, so that you do not need to change procedures and bar