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

Should validation occur server-side or client-side, Should validation (did ...

Should validation (did the user enter a real date) occur server-side or client-side? Why? Validation will be done in both sides i.e., at the server side and client side. Ser

What is importance of xml into edi and electronic commerce, What is the imp...

What is the importance of XML into EDI and electronic commerce? XML has been explained as lightweight SGML: XML demonstrates great promise for its inherent capability to per

Describe distributed object model, Question 1 Give a brief explanation on m...

Question 1 Give a brief explanation on message oriented middleware Question 2 Describe Distributed object model Question 3 Explain File systems in a distributed computing Env

How e-commerce website works, Procedure The only difference between e-...

Procedure The only difference between e-commerce and conventional commerce is that goods in e-commerce are purchased over the internet using a credit card. Also buying and sel

Define electronic data interchange, Define Electronic Data Interchange. ...

Define Electronic Data Interchange. An EDI stand for Electronic Data Interchange is used by organizations for transactions which occur on regular basis to a pre-determined for

Manipulating logical expressions, Digital circuits also manipulate logicale...

Digital circuits also manipulate logicalexpressione.g. IF account is in credit THEN allow phoneto make calls.So a digital circuit must determine if somethingis TRUE or FALSE. Norma

Explain switch statement, Switch This is another form of the multi way ...

Switch This is another form of the multi way decision. It is well structured, but can only be used in certain cases where; Only one variable is tested, all branches must

What is called when a star connected intermediate exchange, A star connecte...

A star connected intermediate exchange is known as a? A star connected intermediate exchange is termed as a Hub exchange.

Explain the real time system, What is real time system? A real time sys...

What is real time system? A real time system has well explained, fixed time constraints. Processing must be done within the explained constraints, or the system will fail. It i

Show the decimal representation in computers, Binary number system is most ...

Binary number system is most common for computer due to two stable states of its components. However unfortunately this isn't a very natural system for us as we deal with decimal n

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