INTRODUCTION TO MICROPEOCESSOR
MICRO PROCESSOR AND MICRO CONTROLLER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Read the statements answer following questions.DMA controller is a control unit, part of I/O device’s interface circuit, which can transfer blocks of data between I/O devices and main memory with minimal intervention from the processor.Why DMA controller is used.
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To control processor
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To speed up I/O device processing
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To manage memory allocation
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To perform arithmetic operation
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Explanation:
Detailed explanation-1: -Answer. All of the statements about DMA (Direct Memory Access) are true: DMA is an approach of performing data transfers in bulk between memory and the external device without the intervention of the processor.
Detailed explanation-2: -Can a single DMA controller perform operations on two different disks simultaneously? Explanation: The DMA controller can perform operations on two different disks if the appropriate details are known.
Detailed explanation-3: -DMA stands for Direct Memory Access. It is designed by Intel to transfer data at the fastest rate. It allows the device to transfer the data directly to/from memory without any interference of the CPU.
There is 1 question to complete.