It is of great importance for people to know exactly what type of output ports the computer supports when they are deciding to buy it. After all, what they want is just to be able easily hook up to the computer monitor, or the projector no matter where they are. Therefore, it is advisable for people to make their decisions in a careful way after serious considerations.
As a matter of fact, there is no clearcut standard for video connectors. Therefore, most projectors and even lots of displays have multiple input ports. Generally speaking, there are multiple standards of computer video cables, namely, VGA, DVI and HDMI. In effect, each of them has its own advantage and they are still in competition in order to win people’s favor.
VGA cables can only carry analog signals. As a result, the analog signal sometimes needs to be converted into digital signals, which may lead to some quality loss of the vide source. On the other hand, it’s possible to reach a relatively high range of video resolutions because of using higher frequencies.
DVI, one of VGA’s successors, is appearing more and more on computers and displays, especially on higher-end graphics card and high-resolution computer displays. However, DVI is not considered as the mainstream connector as VGA.
In addition, there are several types of DVI connectors which can handle uncompressed digital video. Therefore, the video quality does not depend on the cable very much. It is safe to say that the video quality can be better in this way.
If DVI is considered to be the successor to VGA, then HDMI is possible the successor to DVI. HDMI enjoys a better fame in comparison with DVI possibly as it often appears on high definition televisions. In effect, HDMI is compatible with newer televisions, which makes it more and more popular in the electronics market. Its compact size is more and more often showing up in computers and computer displays as well.