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DMA interface unit eliminates the need to use CPU registers to transfers data from

(a) MAR to MBR                    (b) MBR to MAR
(c) I/O units to memory          (d) Memory to I/O units
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2 Answers

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Both option C and D should be Correct Answer .

DMA interface unit eliminates the need to use CPU registers to transfer data from Memory to I/O units or vice versa.

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