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

What do conditional assignments get inferred into, What do conditional assi...

What do conditional assignments get inferred into? Conditionals  in  a  continuous  assignment  are  specified  through  the  "?:"  operator.  Conditionals  get inferred into a

What is file scope, Explain File scope File scope: The variables and ...

Explain File scope File scope: The variables and functions with file scope appear outside any block or list of parameters and are accessible from any place in the translation

Different edi components and services, Different EDI components and service...

Different EDI components and services  Three main components containing services in EDI System are as follows:  •  Application Service: Gives the means of integrating existi

Hazard, how to calculate delay for hazard?

how to calculate delay for hazard?

Which things should microprocessor validate, Q. Which things should micropr...

Q. Which things should microprocessor validate? A microprocessor should validate: Powerful addressing modes More addressing capability More throughput Po

Fuzzy logic - artificial intelligence, Fuzzy set theory provides a means fo...

Fuzzy set theory provides a means for modeling the kind of uncertainty associated with vagueness, with imprecision, and/or with a lack of information regarding a particular element

Explain folded network, Explain Folded network. Folded network: While...

Explain Folded network. Folded network: While all the inlets/outlets are connected to the subscriber lines, the logical connection shows as demonstrated in figure. When, the

List factors that determine the storage device performance, List the factor...

List the factors that determine the storage device performance. i.Access time ii.Cycle time iii.Transfer Rate.

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