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

My project has not working, my project is in .net of lan chatting its have ...

my project is in .net of lan chatting its have tcp\ip connection problem

Determine about the pick device, Determine about the Pick Device Light ...

Determine about the Pick Device Light Pens The light pen used to select screen positions by detecting the light coming from points on the CRT screen. These are sensitive to

Implement and - or- not gates using bit wise operator, Q. Develop  a menu d...

Q. Develop  a menu driven program to implement AND, OR, NOT gates using and without using  Bit wise operator. The menu  should  be  as follows: I.  Using Bit Wise operator I

When should the method invokelater() be used, This method is used to make s...

This method is used to make sure that Swing components are updated by the event-dispatching thread.

How client and server use same protocol port at same time, Can both client ...

Can both client and server use the same protocol port on the same computer at the same time? Explain. Client and server can't use similar port number on similar computer at ide

How and what data is collected - weather simulation, How and what data is c...

How and what data is collected - Weather simulation -  Sensors measure pressure, relative humidity, temperature and wind speed and wind direction -  Sensors are placed in w

Determine about the security methods, Determine about the Security methods ...

Determine about the Security methods Security methods also protect information from accidental or intentional modification, manipulation or destruction. Most security experts o

Explain passing parameters using pointers, Q. Explain Passing Parameters Us...

Q. Explain Passing Parameters Using Pointers ? This method overcomes the drawback of using variable names directly in procedure. It uses registers to pass procedure pointers to

Recent parallel programming models, A model for parallel programming is an ...

A model for parallel programming is an abstraction and is machine architecture independent. A model can be executed on several hardware and memory architectures. There are various

Explain relative addressing scheme, Q. Explain Relative Addressing Scheme? ...

Q. Explain Relative Addressing Scheme? In this addressing technique the register R is the program counter (PC) which contains the address of current instruction being executed.

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