Explain virtual memory, Computer Engineering

Assignment Help:

In a memory hierarchy system, data and programs are first stored in secondary or auxiliary memory. Program and its related data are brought in main memory for execution. What if the size of Memory needed for Program is more than the size of memory? Virtual memory is a idea used in some large computer systems which allow user to construct programs as though a large memory space were available, equal to total of secondary memory. Every address produced by CPU goes through an address mapping from so-called virtual address to a physical address in main memory. Virtual memory is employed to give programmers the illusion that they have a very large memory at their disposal although computer in fact has a relatively small main memory. A Virtual memory system offers a mechanism for translating program-generated addresses in correct main memory locations. This is done dynamically whereas programs are being executed in CPU. The translation or mapping is handled automatically by hardware through a mapping table.


Related Discussions:- Explain virtual memory

Find the average of two values, Q. Find the average of two values? Find...

Q. Find the average of two values? Find the average of two values which are stored in  ; Memory locations named FIRST and SECOND  ; And puts result in memory location AVG

Add a byte number from one memory location, Add a byte number from one memo...

Add a byte number from one memory location to a byte from subsequent memory location and put sum in the third memory location. Also save carry flag in the least significant bit of

What is c language, The C programming language is a standardized programmin...

The C programming language is a standardized programming language forrned in the early 1970s by Ken Thompson and Dennis Ritchie for use on the UNIX operating system. It has since s

What are the defining traits of an object-oriented language, The defining t...

The defining traits of an object-oriented language are: * Encapsulation * Inheritance * Polymorphism

Name the memory used in microprocessor systems, Name the fundamental kinds ...

Name the fundamental kinds of memory used in microprocessor systems There are three fundamental kinds of memory used in microprocessor systems - generallyknown asRAM, ROM, and

Explain the term - restating the requirements, Restating the Requirements ...

Restating the Requirements To have clarity of analytical model of system you must state requirements specific performance constraints with optimization criteria in one documen

What is bus arbitration, Q. What is Bus arbitration? In this technique,...

Q. What is Bus arbitration? In this technique, I/O interface first needs to control bus and only after that it can request for an interrupt. In this technique because only one

Explain about olap, OLAP is called as online analytical processing which gi...

OLAP is called as online analytical processing which gives answers to queries which are multi dimensional in nature. It composes relational reporting and data mining for giving sol

Drawbacks to having call centres overseas, Drawbacks to having call centres...

Drawbacks to having call centres overseas -  Culture and language problems -  Animosity to overseas call centres (resulting in loss of customers) -  need for extensive r

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