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direct memory access

   Also found in: Dictionary/thesaurus, Acronyms, Wikipedia, Hutchinson 0.23 sec.

direct memory access

See DMA.

direct memory access [də¦rekt ¦mem·rē ′ak‚ses]
(computer science)
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.
(architecture)Direct Memory Access - (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.


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11 medium access controller (MAC) enhancements, the Am1772 wireless chipset is a Complementary Metal-Oxide Semiconductor (CMOS) solution that utilizes baseband processor and a MAC, with a descriptor-based direct memory access (DMA) host interface.
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Parallel databases, including Oracle Parallel Server, IBM DB2 UDB EEE, and Microsoft SQL Server 2000 were early adopters of VI, exploiting the benefits of direct memory access.
VI: Enabling High-Performance Data Access by Shelley, Marc / Computer Technology Review
One reader features a new and unique industrial design and is fully compatible with two new flash card interface standards: Ultra Direct Memory Access (UDMA) CompactFlash([R]), a high-performance flash memory protocol based on the CompactFlash form factor, and Secure Digital High Capacity (SDHC[TM]), a memory standard that supports capacities of 4GB and higher in the Secure Digital (SD[TM]) form factor.
Lexar Introduces Two New Professional Flash Card Readers for Maximum ... by Business Wire
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