2007-02-20 17:27:38 · 3 answers · asked by Anonymous in Computers & Internet ➔ Hardware ➔ Other - Hardware
DMA= Direct Memory Access
This allows a peripheral to do I/O (Input/Output) by directly accessing your RAM... It is faster than normal modes!
2007-02-20 17:31:31 · answer #1 · answered by N2FC 6 · 3⤊ 0⤋
The Functions of the DMA (Direct Memory Access) Controller is to enable the transfer of data to/from I/O Devices to/from memory, without having to go through the processor first. This reduces the overhead on the processor and speeds up the whole process.
For more detailed info refer to http://en.wikipedia.org/wiki/Direct_memory_access
This topic has also been dealt in detail by William Stallings in the book "Computer Organization and Architecture".
2007-02-20 17:40:48 · answer #2 · answered by Bhargav 3 · 0⤊ 0⤋
DMA is an essential feature of all modern computers, as it allows devices to transfer data without subjecting the CPU to a heavy overhead ...read more at http://en.wikipedia.org/wiki/Direct_memory_access
2007-02-20 17:31:22 · answer #3 · answered by ? 5 · 0⤊ 0⤋