Explain i/o buffer and advantage of buffering, Computer Engineering

Assignment Help:

What is an I/O buffer? What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example.  

One type of I/O requirement arises from devices which have a very high character density like tapes and disks. With these attributes, it is not possible to regulate communication along with devices on a character-by-character basis. Hence, the information transfer is regulated in blocks of information. In addition, sometimes this may need some type of format control to structure the information to suit the device and/or data characteristics. For example, a disk drive is different from a line printer or an image scanner.

For each of these devices, the format and structure of information is dissimilar. It should be examined that the rate at which a device may offer data and the rates at which an end application may consume it might be significantly different. In place of these differences, the OS should offer uniform and easy to use I/O mechanisms. Generally, this is done by providing an I/O buffer. The OS manages this buffer thus as to be able to comply with the requirements of both the producer and consumer of data. Essentially, the buffers absorb mismatch in the data transfer rates of processor or memory on one side and device on the other.


Related Discussions:- Explain i/o buffer and advantage of buffering

How to run an app in a page with existing content, There are no needs.. If ...

There are no needs.. If you need to use a Viewport you can! If you want to render components into divs... you can do that aswell.

Mode counter, desing mode level counter starting at 0011 using D flipflop

desing mode level counter starting at 0011 using D flipflop

Determine maximum possible time of 4-bit synchronous counter, A 4-bit synch...

A 4-bit synchronous counter uses flip-flops with propagation delay times of 15 ns each.  The maximum possible time required for change of state will be ? Ans. 15 ns since in sy

Depth-first search is different from breadth-first search, Depth-first sear...

Depth-first search is different from Breadth-first search in the following ways: A depth search traversal method goes to the deepest level of the tree first and then works up w

Components of information super highway infrastructure, Explain the compone...

Explain the components of Information Super Highway Infrastructure. The Information Superhighway is more than the Internet. It is a sequence of components, having the collectio

Implement a priority queue, 1. Insert the following characters with their r...

1. Insert the following characters with their respective priorities (shown as ordered pairs) into an empty treap: (K, 17), (F, 22), (P, 29), (M, 10), (N, 15), (L, 26), (G, 13),

Illustrate the logical view of a system, Illustrate the Logical view of a s...

Illustrate the Logical view of a system The Logical view of a system serves to describe existence and meaning of key abstractions and mechanism which form problem space, or wh

List the key notions concerning macro expansion, List the key notions conce...

List the key notions concerning macro expansion. Two key notions relating to macro expansion is: 1. Expansion time control flow- Determines the order of model statements tha

Explain multithreading in a programming language, Multithreading is the pro...

Multithreading is the process in which more than single thread run independent of each other within the process in any programming language such as C, C++, etc.

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