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Direct Memory Access - Computer Fundamentals
562    Arnab De    06/11/2019   

What is Direct Memory Access or DMA?

The method of transferring data from RAM or primary memory to another memory of a computer, especially in secondary memory and register memory, without informing the CPU or Computer Processing Unit is known as DMA or Direct Memory Access.

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Any data input to the computer need to be processed by the CPU. But in some of the cases there is no need for processing of data. Like copy a data from RAM to HARDDISK. It is a dump job that is no robot science is needed. As processor is a busiest part of a computer, we can easily bypass that job through a DMA controlled IC. It increases the computer performance. Each input and output ports are assigned to a DMA channel.

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Characteristics of a computer Printer and types of printer
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Author Details
Arnab De
I have over 16 years of experience working as an IT professional, ranging from teaching at my own institute to being a computer faculty at different leading institute across Kolkata. I also work as a web developer and designer, having worked for renowned companies and brand. Through tutorialathome, I wish to share my years of knowledge with the readers.
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