Direct Memory Access
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direct memory access[də¦rekt ¦mem·rē ′ak‚ses]
The use of special hardware for direct transfer of data to or from memory to minimize the interruptions caused by program-controlled data transfers. Abbreviated dma.
Direct Memory Access(architecture)
(DMA) A facility of some architectures which allows a peripheral to read and write memory without intervention by the CPU. DMA is a limited form of bus mastering.