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

Can gimp install its own colormap, Yes. In either the system-wide gimprc...

Yes. In either the system-wide gimprc file or your personal gimprc file, uncomment the line that have install-colormap.

8085 programs, what is the theory used to check whether a number is negativ...

what is the theory used to check whether a number is negative or positive?

List one advantage & disadvantage of having large block size, List one adva...

List one advantage and one disadvantage of having large block size. Ans: Advantage: By using a huge block of memory is maximum process's accommodation that resulting is less no

Cohesion assignments, what can be different assignments given on this topic...

what can be different assignments given on this topic?

Principle of locality, Principle of locality: Temporal  base locali...

Principle of locality: Temporal  base locality (locality in time):- If an item is referenced then it will tend to be referenced again soon. Spatial locality (local

Show independent loops in fortran program, Q. Show Independent loops in for...

Q. Show Independent loops in fortran program? In the subsequent code portion the directives point to the outer two loops are independent. The inner loop allocates elements of A

Explain an intermediate language, Assemblies are made up of IL code modules...

Assemblies are made up of IL code modules and the metadata that explains them. Although programs may be compiled by an IDE or the command line, in fact, they are easily translated

Risc architecture - computer architecture, RISC  architecture - computer a...

RISC  architecture - computer architecture: What is reduced regarding it? The answer of this question is that to make all instructions the equal length the number of bits that

Copy machine problem, We are trying to figure out how many copy machines we...

We are trying to figure out how many copy machines we should install in the basement of Stranahan Hall.  Copy machines should be available 24/7.  Students may walk up at any time o

Write a short notes on storage classes in c, Write a short notes on storage...

Write a short notes on storage classes in C. Every variable and function in C has two attributes : type and storage class. The four storage classes are automatic, external, reg

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