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

#title., REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY

REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY

Address translation - computer architecture, Address translation: ...

Address translation: Compiler time : If it is known in advance that a program will reside at a particular location of primary memory, and then the compiler can be told to

What is xml, XML is the Extensible Markup Language. It betters the function...

XML is the Extensible Markup Language. It betters the functionality of the Web by letting you recognize your information in a more accurate, flexible, and adaptable way. It is e

Turning machine, procedure of turning machine operation on markov algorithm...

procedure of turning machine operation on markov algorithm

What is assembler, What is Assembler A macro-assembler or assembler nor...

What is Assembler A macro-assembler or assembler normally forms a part of operating system. That translates an assembly language program into machine language program.

Explain the working of thousand line exchanges, E xplain the working of th...

E xplain the working of thousand line exchanges by u sing a combination of uniselectors and two motion selectors. The schematic diagram for such an exchange is demonstrated i

What is meant by a priority encoder, What is meant by a priority encoder? ...

What is meant by a priority encoder? Ans: Priority encoder- Basically an encoder is a combinational circuit which performs the inverse operation of a decoder. The input c

Determine the computer arithmetic operations, Computer Arithmetic Data ...

Computer Arithmetic Data is manipulated with the help of arithmetic instructions in digital computers. Data is manipulated to  produce the results  necessary  to  provide solut

Uneven load distribution in parallel computers, Q. Uneven Load Distribution...

Q. Uneven Load Distribution in parallel computers? In parallel computers the problem is split in sub-problems in addition is assigned for computation to several processors howe

What are the static and dynamic hazards in logic circuits, If for a short p...

If for a short period of time circuits goes to some dissimilar logic level then it is assumed to have then it is known as static hazard e.g. If the final logic value of output of a

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