Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). [1]

Oct 16, 2024 · Direct Memory Access (DMA) uses hardware for accessing the memory, that hardware is called a DMA Controller. It has the work of transferring the data between Input Output devices and main memory with very less interaction with the processor.

Jan 20, 2025 · Direct Memory Access (DMA) is a technique used in computers and other electronic devices to allow peripherals (like hard drives, network cards, and sound cards) to communicate directly with the main memory (RAM) without involving the CPU.

Mar 14, 2024 · Direct memory access (DMA) allows hardware devices to transfer data between themselves and memory without involving the CPU. Learn from this article how DMA works, the principles, the types of DMA, and some of its benefits and limitations.

Jan 24, 2025 · Direct memory access (DMA) is a process that allows specific hardware devices to access system memory independently of the CPU. This enables the device to perform tasks without interrupting the main processor, improving performance. DMA is used for devices such as disk controllers and network cards.

Oct 10, 2019 · Direct Memory Access (DMA) transfers the block of data between the memory and peripheral devices of the system, without the participation of the processor. The unit that controls the activity of accessing memory directly is called a DMA controller.

Mar 19, 2025 · It starts with: DMA is managed by the OS. User asks for part of a file, File system decides it needs a block from disk, disk driver configures DMA to happen with a disk-buffer as a destination.

Direct Memory Address typically known as DMA is a data transfer technique in which I/O devices communicate directly with the memory without passing through the Central Processing Unit. In this hardware mechanism, a DMA controller substitutes the CPU unit and is responsible for accessing the input-output devices and memory for transferring data.

Mar 31, 2021 · DMA (Direct Memory Access) frees the CPU from these menial tasks. With DMA, peripheral devices do not have to ask the CPU to fetch some data for them, but can do it themselves. Unfortunately,...

Aug 15, 2024 · Direct Memory Access (DMA) is a feature in computer systems that allows hardware subsystems to access the main system memory independently of the CPU. It allows hardware devices like disk drive controllers, network cards, and sound cards to transfer data to and from memory without involving the CPU.