DMA stands for _________.
A) direct memory access, allowing memory operations to take place directly between certain I/O devices and memory which allows the CPU to continue its operation with minimum interruptions
B) direct multiple access, operations directly between the CPU and multiple I/O devices which speed up the computer system
C) direct memory access, operations that allow the CPU direct access to the memory of I/O devices
D) all of the above, depending on the system

Question

Quizplus · Accepted Answer

DMA stands for Direct Memory Access, a system that allows certain hardware subsystems within a computer to access the system memory for reading and/or writing independently of the central processing unit (CPU), thus allowing the CPU to perform other tasks while the data transfer is occurring. This reduces the need for the CPU to be involved in data transfers between the memory and the I/O devices, improving the overall performance of the computer. Options B and C misrepresent the concept by suggesting incorrect functionalities or purposes of DMA.

DMA Stands for _________