Explain working of direct memory access, Computer Engineering

Assignment Help:

Q. Explain working of Direct Memory Access?

In both programmed I/O and interrupt-driven processor is busy with executing input/output instructions and I/O transfer rate is limited by speed with which processor can test and service a device. What about a scheme that needs minimal intervention of CPU for input/output? These two types of shortcomings can be overcome with a more efficient technique called as DMA that behaves as if it has taken over control from processor.  C  Consequently the question is: why do we employ DMA interface? It is employed primarily when a large amount of data is to be transferred from I/O device to Memory.


Related Discussions:- Explain working of direct memory access

Advantage and disadvantage of threaded binary trees, Advantage  1.     ...

Advantage  1.       By doing threading we neglect the recursive method of traversing a Tree , which makes use of stack and consumes many memory and time . 2.       The node

Differentiate between sequential and combinational circuits, Problem 1 ...

Problem 1 Prove that :- x(x + y) = x by using identities 2 Write a short note on Analog to Digital Converter (ADC) 3 Differentiate between sequential and combinational ci

Cim and holonic manufacturing system, CIM and Holonic Manufacturing System ...

CIM and Holonic Manufacturing System The improvement of computer integrated manufacturing has demonstrated that the automation has the same potential such that of computers in

Define parsing, Define Parsing Parsing is the method of analyzing a te...

Define Parsing Parsing is the method of analyzing a text, made up of a sequence of tokens, to define its grammatical structure with respect to a given formal grammar. Parsing

Describe about remote-load latency problem, Q. Describe about Remote-load L...

Q. Describe about Remote-load Latency Problem? When one processor requires some remote loading of data from other nodes then processor has to wait for these two remote load ope

Password cracking, Hashed strings can often be deciphered by 'brute forcing...

Hashed strings can often be deciphered by 'brute forcing'. Bad news, eh? Yes, and particularly if your encrypted passwords/usernames are floating around in an unprotected file some

State the concept of hierarchy in object oriented, Hierarchy Hierarchy...

Hierarchy Hierarchy is a process of ranking or ordering of abstraction. Hierarchy is decided by the help of 'divide and conquer' principle. Complex objects can be described

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd