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

Quantitative analysis, solve the primal problem using duality and determine...

solve the primal problem using duality and determine the primal and dual solution P= 300x1 + 300x2 S.T. 2x1 + 3x2 => 13 3x1 = 2x2 => 15 x1,x2 => 0

What do you mean by embedded system, It is a mixture of hardware and softwa...

It is a mixture of hardware and software to perform needed task

Explain about heterogeneous linked list, If you are using C language to imp...

If you are using C language to implement the heterogeneous linked list, what pointer type will you use? The heterogeneous linked list having different data types in its nodes a

Phase - thermodynamics, Phase - Thermodynamics: A phase is quantity of...

Phase - Thermodynamics: A phase is quantity of matter that is homogeneous throughout in chemical composition and physical structure. If the matter is all gas, all liquid or

What is a piconet in a bluetooth context, Problem: (a) IEEE802.11 supp...

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

What are the advantages of batch processing, What are the advantages of bat...

What are the advantages of batch processing This has the advantage which jobs can be processed when computer resources are less busy (for example during the evening or at night

Define the architectural framework for electronic commerce, Define the Arch...

Define the Architectural framework for electronic commerce. An application independent framework to categorize service interaction relies onto four fundamental dimensions a.

What is overflow and underflow case in single precision, What is overflow, ...

What is overflow, underflow case in single precision(sp)? Underflow-In SP it means that the normalized representation needs an exponent less than -126. Overflow-In SP it mea

Two services that are used to deal with communication, Explain about the tw...

Explain about the two services that are used to deal with communication. Message Service: Used by the application servers to change short internal messages, all system commu

Fundamental differences between risc and cisc architecture, Q. Fundamental ...

Q. Fundamental differences between RISC and CISC architecture? Fundamental differences between RISC and CISC architecture. The following table lists following differences:

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