In present market of computers, you can found many types of ports for your computer’s monitor and the ports are using for the video output of your monitor. In the case of old CRT monitors the outputs are not that good quality as they are using the old modeled analog ports or VGA ports but the output of the LCD and LED are very good and high quality as they are using the digital video interface or DVI ports so their outputs have also very high resolution. If you are thinking about the difference between DVI output and analog output or VGA output then you must check them both and in the first site you will say that there are a large number of differences between them based on their video and audio quality. The DVI outputs are very good for both audio and video quality while the VGA or analog output is not that good in a comparison with the DVI. That means the outputs of an analog or VGA is very poor while the DVI outputs has the full function and entertainment of in the best quality as they are using the best quality cables and ports which are also based on DVI.