Schewanick Computer Services

Remember, this article can be read with pictures at:

DVI">wwwwww.tca-inc.net/dvi_info.html">DVI Computer Cables



So What is DVI? DVI Stands for Digital Visual Interface. DVI is the

digital interface standard created by the DDWG (Digital Display

Working Group, www.ddwg.org). Led by Compaq, Fujitsu, Silicon

Image, Hewlette Packard, NEC, Intel and IBM, the DDWG's main

objective is to "address the industry's requirements for a digital

connectivity specification for high-performance PCs and digital

displays." - per the DDWG statement, available at www.DDWG.org.



With the need to accommodate both digital and analog monitors,

this new digital interface standard was created to convert analog

signals into digital signals. DVI's High bandwidth capabilities make

it ideal for HDTV connections. Also available in dual link, DVI can

reach higher resolutions still.



Using the pictures on the right, you can determine the type of

connection you need, be it DVI-D, or DVI-I. To determine the actual

signal being used you will have to consult your manual for the device

being connected. For more information concerning DVI:



DVI-D Digital. Connectors on DVI-D do not have the 4 additional

pins, these are meant for carrying Digital signals only. Digital must

be connected to Digital and Analog to Analog. While you can plug a

DVI-D cable into a DVI-I socket, both devices you are connecting

must support Digital signal format. Analog to Digital will not work.



DVI-I Analog or Digital. Connectors are basically the same as DVI-D

with the exception of 4 added pins. You'll notice both have 3 rows of

pins to the left, and one horizontal pin to the right. The DVI-I

connection has 4 additional pins, 2 on top and 2 on bottom. These

pins are used to carry the needed signals for RGBHV analog video.

(Red, Green, Blue and Horizontal). You can use DVI-I on both DVI-D

and Analog connections, but remember, an analog device will not be

compatible with a Digital device. For more pictures of these items visit:

DVI">wwwwww.tca-inc.net/dvi_info.html">DVI Computer Cables



Adapters HD15 to DVI-I (VGA to analog) adapters exist to connect

your analog device to a analog display through DVI connection.

Remember that while DVI-I is usable for Digital display, the extra 4

pins make it usable for Analog as well. The needed adapters is

available in our store. Computer Cable

About the author:

Dustin Twiggs writes articles for www.tca-inc.net, his informational articles are intended to help those in need of the information available. If you find it usefull, please book mark the site, www.tca-inc.net and tell a friend.