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

Define the programmable logic devices (pld), Define the Programmable logic ...

Define the Programmable logic devices (PLD)? In the world of digital electronic systems there are three essential kinds of devices 1.memory, 2.microprocessors, and 3.logic. The

Find blocking probably in 100-line strowger switching system, Calculate the...

Calculate the blocking probably Pb in 100 line strowger switching system where 10 calls are in progress and 11th one arrives, probably that there is a call in a given decade = 1/10

Extract data from tables without using the event ''get'', Is it possible to...

Is it possible to extract data from tables without using the event 'GET' in the report with an appropriate LDB. False.   You can extract data from tables using Select stateme

Uninformed search strategies - artificial intelligence, Uninformed Search S...

Uninformed Search Strategies: To be able to undertake an unaware search, there is really important that the entire agent needs to know is the primary state, then the possible

How exceptions are handled in java, How exceptions are handled in java? ...

How exceptions are handled in java? Exception handing In Java: A java exception is an object which describes an exceptional condition which has occurred in a piece of code.

Synchronous sequential circuits, Q. Differentiate the Multiplexer and Demul...

Q. Differentiate the Multiplexer and Demultiplexer with respect to their concept, block diagram and circuit. Q. What is the difference between Synchronous sequential circuits an

Offset litho duplicating of information, Offset Litho Duplicating Equi...

Offset Litho Duplicating Equipment Required Duplicator Plate-making equipment (not always, essential), e.g. printing box and processing unit Plates Paper Ink

Resolution method - artificial intelligence, Resolution Method - Artificial...

Resolution Method - Artificial intelligence: A minor miracle happened in 1965 when Alan Robinson published his resolution function. This function uses a generalized format of t

What are types of firewalls, What are types of firewalls? There are con...

What are types of firewalls? There are conceptually two types of firewalls as: 1. Network Level 2. Application Level

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