Explain the need for DMA and modes of DMA data transfer.

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written 9.4 years ago by

teamques10 ★ 70k

modified 3.1 years ago by

sagarkolekar ★ 11k

microprocessors and microcontrollers

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written 9.4 years ago by

teamques10 ★ 70k

• modified 9.4 years ago

In I/O data transfer, data is transferred by using microprocessor. The microprocessor will read data from I/O device and then will write data to memory.
In this case, there are two operations for single data transfer. If the data is less then microprocessor will not waste its time transferring data …

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