In the field of microprocessor what is DMA?why it is used?

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In the field of microprocessor what is DMA?why it is used?..

Answer / sreeram

The DMA is used to free the microprocessor from direct control of data transfer between the memory and the Input/Output (I/O) Peripherals by making use of Channels. During this time the processor will continue working on something else.

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In the field of microprocessor what is DMA?why it is used?..

Answer / sanyog&priyanshu

DMA is the abbreviation of direct memory access.It is used
same as FFT in DSP.means it is used for transfering the
data from microprocessor to periferals when there is no
need of interrupt signal.

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In the field of microprocessor what is DMA?why it is used?..

Answer / ritesh saha

DMA stands for Direct Memory Access.
DMA is used to transfer data between system memory and IO
devices.DMA has 2 pins namely HOLD and HLDA.The former holds
an instruction that is to be transferred.After that,an
acknowledge signal is sent which is known as HLDA.After
transfer is completed,DMA removes HOLD signal and the
processor removes HLDA signal and starts from where it let
off.

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