What is input - output interface, Computer Engineering

Assignment Help:

The I/O interface provides a technique for transferring information between external I/O devices and internal storage. Peripherals linked to a computer require special communication links for interfacing them with CPU. Objective of communication link is to resolve differences which exist between central computer and every peripheral. The key differences are:

  • Peripherals are electromechanical and electromagnetic devices as well as their operations are different from operation of CPU and memory which are electronic devices.
  • Data transfer rate of peripherals is generally slower than transfer rate of CPU and thus a synchronization mechanism may be required.
  • Data codes and formats in peripherals differ from word format in CPU and memory.
  • Operating modes of peripherals are dissimilar from one another and each one should be controlled so as not to disturb operation of other peripherals associated to CPU.

To resolve these differences, computer systems include special hardware component between the CPU and peripherals to supervise and synchronize all input and output transfers. These components are called interface units because they interface between the processor bus and the peripheral device.


Related Discussions:- What is input - output interface

Multi-threaded processors, Multi-Threaded Processors In unit 2, we have...

Multi-Threaded Processors In unit 2, we have gone through the use of distributed shared memory in parallel computer architecture. Although the use of distributed shared memory

Cut-off search - artificial intelligence, Cut-off Search: By using  a m...

Cut-off Search: By using  a minimax search, all we have to do is program, in a game playing situation our agent to look at the whole  search tree from the current state of the

Build and fix model, Why Build and fix model is considered as ad-hoc softwa...

Why Build and fix model is considered as ad-hoc software development model?

The height of the left sub tree and height of the right tree, The differenc...

The difference among the height of the left sub tree and height of the right tree, for each node, is almost one.  AVL - tree

Cryptography, Basically I need implement program using LC3 assembly languag...

Basically I need implement program using LC3 assembly language where I can type any message using ASCII code (this will my input). Then read the output in cipher text. It has to be

Explain possible attacks on the wired equivalent privacy, Question : (a...

Question : (a) IEEE802.11 supports two types of network architecture, describe these architectures with the support of diagrams detailing the network components. (b) IEEE80

What is check box, A dialog box, generally square, that records an on or of...

A dialog box, generally square, that records an on or off value.

What are the advantages of using xml over html, What are the advantages of ...

What are the advantages of using XML over HTML?  The root cause of the problem lies in HTML (Hyper Text Mark-up Language), the defacto standard for web publication. The main pr

Displaying the towers of hanoi solution, Once you have a solution to the To...

Once you have a solution to the Towers of Hanoi problem, we want to improve the display of the solution. The details of the implementation are up to you. At a minimum, your impleme

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