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Many cards that plug into expansion slots have or have had jumpers that allow for some user configuration. In some cases the video card jumpers are used to allow the user to "map" the memory addresses of the video card memory into computer memory and another jumper allows the user to select an interrupt. The video memory address allows the video card memory to look like ordinary RAM and the computer is able to write directly to video RAM as it would ordinary RAM. The interrupt vectors of some cards allow the expansion device to send an interrupt when there is some kind of data that is ready to be transferred. You would have to read more about the specific expansion card to find out more about the jumpers. Most of the newer video cards are built into the motherboard and even the ones that aren't are pretty much plug-and-play, and there is little that has to be done to make them work other than finding the correct driver if one isn't included.

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โˆ™ 2005-10-11 14:17:47
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Q: What are the jumpers on a video card?
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