State in brief about virtual memory, Computer Engineering

Assignment Help:

What is Virtual memory

The term virtual memory signifies something that appears to be present though actually it is not. Virtual memory technique enables users to use more memory for a program than real memory of a computer. A programmer can write a program that requires more memory space than capacity of the main memory. Such a program is executed by virtual memory technique. Program is stored in the secondary memory. Memory management unit (MMU) transfers currently required part of the program from the secondary memory to main memory for execution. This part of program is executed by the processor. After execution this part of program is sent back to the secondary memory together with immediate results. Afterwards CPU takes another part of the program for execution. So the main memory always keeps only currently needed part of the program. This type of 'to and from' movement instructions and data between main memory and secondary memory is termed as swapping. So a program requiring more memory space than capacity of the main memory can executed employing a swapping technique. This concept is called virtual memory technique.

 


Related Discussions:- State in brief about virtual memory

Explain interface, What is an Interface? An interface is not a class. I...

What is an Interface? An interface is not a class. It is an entity that is explained by the word Interface. An interface has no implementation; it only has the signature or in

Abap/4 module can "branch to " or "call" the next screen, The commands thro...

The commands through Which an ABAP/4 Module can "branch to " or "call" the next screen are Set screen Call screen , Leave screen, Leave to screen

Explain interactive reporting, What is interactive reporting? A classic...

What is interactive reporting? A classical non-interactive report having of one program that makes a single list.  Instead of one extensive and detailed list, with interactive

Why are high-speed memories required, Q. Why are high-speed memories requir...

Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe

Explian two limitations of dead-box analysis, (a) Explian two limitations o...

(a) Explian two limitations of dead-box analysis. (b) Describe why memory analysis is difficult. (c) With reference to the "Shadow Walker" rootkit, explain what is meant by

Describe about pascaline, Q. Describe about Pascaline? Blaise Pascal ma...

Q. Describe about Pascaline? Blaise Pascal made very first attempt in the direction of automatic computing. He invented a device that comprised lots of gears and chains that us

What is nv-ram, Nonvolatile Read Write Memory, also kown as Flash memory. I...

Nonvolatile Read Write Memory, also kown as Flash memory. It is also called as shadow RAM.

Define parsing, Define Parsing Parsing is the method of analyzing a te...

Define Parsing Parsing is the method of analyzing a text, made up of a sequence of tokens, to define its grammatical structure with respect to a given formal grammar. Parsing

Main problems with evaluation functions, Main problems with evaluation func...

Main problems with evaluation functions: Superlatively, evaluation functions should be quick calculates. Wherever is chance they take a long time to estimate, so after then le

Solution of multi-layer ann with sigmoid units, Solution of multi-layer ann...

Solution of multi-layer ann with sigmoid units: Assume here that we input the values 10, 30, 20 with the three input units and from top to bottom. So after then the weighted s

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