DVI comes in three flavors:
DVI-D this is a digital signal from the PC to the monitor. THis generally gives the best picture quality as it avoids the digital to analog conversion in the PC, transmission up a lossy cable and then a analog to digital conversion in the monitor.
DVI-A this is exactly the same signals as in a VGA connector, but in a DVI connector instead.
DVI-I this is DVI-D and DVI-A all in one connector.
The DVI dongles change a DVI-A layout to a VGA layout.
So if your monitor has a DVI-D input then your system can not produce a DVI-D output and a dongle will do nothing for you.
If your monitor has a DVI-I input (analog and digital) then you can use the dongle to go from the VGA connector on the back of the PC to a DVI-A connector, and then use a DVI-A cable to connect to the DVI-I connector on the monitor. Unless you have a very poor VGA cable this is fairly pointless as it is still an analog connection.
You will probably spend as much on a DVI-A cable as you would on a shiny new video card which would allow you to connect via the DVI-D cable that shipped with the monitor (if they were not to cheap to provide one) and get the better picture quality.
2007-08-21 15:12:35
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answer #1
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answered by Simon T 6
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The simple answer is to connect your VGA output on your desktop to the VGA connector on your monitor. DVI isn't necessary.
There are several types of DVI adapters. The most common type converts DVI to VGA or VGA to DVI. You use a VGA to DVI adapter to convert the VGA output of the desktop and hook it into the DVI port on your monitor. You only do this if your monitor doesn't have a VGA port. However, this conversion buys you nothing as far as image quality. It's still an analog signal. So, if you buy an adapter, you've spent the money for no real benefit.
DVI is digital video. This means, what is output from a video card is exactly what you see on the screen (pixel for pixel right from the card's memory buffer). Digital video displays no artifacts at all and gives the clearest picture, best contrasts and the brightest colors.
VGA is analog and this means the video card must convert the internal digital image data to an analog prior to displaying it on the monitor. This conversion process adds noise and degrades the signal. So, you can sometimes see ghosting, interference, being washed out, colors less bright, contrast is usually less intense, etc.
2007-08-21 15:44:26
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answer #2
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answered by commorancy 5
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If you have a VGA cable, you can use it to connect your desktop directly to the VGA input of your monitor. If you have a DVI cable, you connect it to the DVI input of the monitor and the other end to the VGA port of the desktop USING THE DVI ADAPTER.
2007-08-21 15:12:55
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answer #3
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answered by Karz 7
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Hi Usually the DVI/VGA only goes one way, DVI to VGA. If your monitor does not support DVI then there is no advantage.
2007-08-21 15:06:33
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answer #4
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answered by Cirric 7
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no no no a dvi adapter is for say u have a vga port on ur pc but ur monitor is only dvi so ud need an adapter so u can get a picture u aint gonna get a better picture
2007-08-21 15:04:38
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answer #5
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answered by dust180 3
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DVI stands for Digital Visual Interface. DVI cables are used to connect a video signal from computers to LCD monitors, HDTV displays, projectors, and cable boxes.
2007-08-21 16:00:48
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answer #6
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answered by asheyknees 2
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if you have a graphics card with DVI outputs, which most cards now have and if you only have VGA inputs then you can use the adapter so that you can use a VGA input on a DVI output
2007-08-21 15:08:41
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answer #7
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answered by fata1ity 2
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dvi- if its an Ieee port is for inputing your camcomcorder or other device. can you buy idont understand. I hav a grandtec pc to video adapter it comes with a vga cable you conect it to you computer then the small converter and it hasvga out s-video out and composit cables the regular tv ones out,therfore connecting to your telivision soun needs a pin to composit adapter
2007-08-21 16:00:49
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answer #8
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answered by dantedemitre 2
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DVI is your digital video adapter, certain monitors use this type of connection. In the future SVideo will be a thing of the past but in the interim many adapter have both or at least a converter.
2007-08-21 15:06:42
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answer #9
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answered by Greg 2
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You would be better off puting the money towards a video card with a DVI output, that way you get a true digital picture.
2007-08-21 15:11:24
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answer #10
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answered by DOUGLAS M 6
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