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DMA operations

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What is the function of DMA?

Direct Memory Access (DMA) is a feature that allows certain hardware components to access the system memory independently of the central processing unit (CPU). This capability enables faster data transfer between devices, such as disk drives and memory, by bypassing the CPU and freeing it to perform other tasks. DMA enhances overall system efficiency and performance, especially in data-intensive applications. It is commonly used in scenarios like disk I/O operations, audio and video processing, and network communications.


What is burst mode and cycle stealing mode?

The DMA controller can be used to steal memory cycles from the processor. Hence this interweaing technique is called cycle stealing The DMA Controller may be Given exclusive access main memory to transfer the block of data without interruption this is known as block or burst mode


What is a terminal degree?

A terminal degree is defined as the "highest" degree available in a particular field. A Ph.D. (Doctor of Philosophy) is an oft mentioned terminal degree in several fields of study. Other terminal degrees include: DA, DBA, Ed.D., DEng, DM, DMus, DMA, DPS, DSc, MD, DPH, et al. The purpose of a terminal degree is to ensure the highest level of competence in a particular discipline and to certify the person's ability to think independently. According to etiquette, only terminal degrees may follow a person's name, e.g., Jane Doe, Ph.D. Most, if not all, terminal degrees merit an earned (as opposed to inherited) title, such as Dr. Jane Doe.