DMA - Direct Memory Access/Addressing.A method of transferring data from one memory area to another without having to go through the central processing unit.Computers with DMA channels can transfer data to and from devices much more quickly than those in which the data path goes through the computer's main processor.Some expansion cards can access the computer's DMA channel if the DMA channel to use is specified during installation; this is sometimes done by setting a jumper or DIP switch.
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