Device controllers, Computer Engineering

Assignment Help:

All components of computer communicate with processor by the system bus. Which means I/O devices required to be attached to system bus. But I/O devices aren't connected directly to computer's system bus. In its place they are attached to an intermediate electronic device interface known as a device controller that in turn is attached to system bus. Therefore a device controller is an interface between a system bus and an I/O device. On one side it knows how to communicate with I/O device associated to it and on the other it knows how to communicate with computer's CPU or processor and memory via the system bus.


Related Discussions:- Device controllers

Priority interrupt and synchronous bus, What is a Priority Interrupt? A...

What is a Priority Interrupt? Ans: A priority interrupt is a type of interrupt that establishes a priority over the many sources to determine which condition is to be serviced

Explain what logic gets synthesized , What logic gets synthesized when I us...

What logic gets synthesized when I use an integer instead of a reg variable as a storage element? Is use of integer recommended? An  integer  can  take  place  of  a  reg  as

What are grouping notations, What are Grouping Notations These notat...

What are Grouping Notations These notations are boxes into which a model could be decomposed. Their elements includes of packages, frameworks and subsystems.

What is keyboard layout, Q. What is Keyboard Layout? A keyboard layout ...

Q. What is Keyboard Layout? A keyboard layout is arrangement of keys across the keyboard. There is one keyboard layout which anybody who has worked on a standard keyboard or ty

Show the dynamic range and colour depth, Q. Show the Dynamic Range and Colo...

Q. Show the Dynamic Range and Colour Depth? Dynamic Range is the number of colours a colour scan or number of grays a monochrome scanner can distinguish. The dynamic range is t

Phython, super ascii string checker

super ascii string checker

Explain the significance of encryption, Problem: (i) What are the main...

Problem: (i) What are the main threats that an organisation holding sensitive data, such as Public Data, on computer storage must guard against? (ii) To protect such data,

Which objects are independent transport objects, Which objects are independ...

Which objects are independent transport objects? Domains, Data elements, Tables, Technical settings for tables, Secondary indexes for transparent tables, Structures, Views, Ma

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

Why is TCP called end-to-end protocol, Why is TCP called end-to-end protoco...

Why is TCP called end-to-end protocol? TCP is termed as an end-to-end protocol as this provides a connection directly by an application in one computer to an application on a r

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