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Coco Coco
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6 years ago
Direct memory access is ________.
 
  A) faster than ordinary memory access techniques because it allows each I/O device direct access to the CPU memory
  B) faster because it substitutes higher speed static RAM for slower dynamic RAM (DRAM), which has to be refreshed on a regular basis and thus slows down the entire computer system
  C) handled by a special DMA controller and is usually several times faster than data transfers handled by the CPU
  D) any one of the above, depending on the particular computer system
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