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

Explain an expression tree with a suitable example, What is an expression t...

What is an expression tree? How an expression is evaluated using an expression tree? Algebraic expressions is as given here a/b+(c-d)e That has an inherent tree-like structure

What is web mail services, What is Web Mail Services? Web-based email s...

What is Web Mail Services? Web-based email services are also called as web mail or HTTP email. Unlike traditional POP email, web mail can be accessed from any PC using any web

What is time slicing, What is time slicing? With this technique each pr...

What is time slicing? With this technique each program runs for a short period known as a time slice, and then another program runs for its time slice and so on.

What are the touch panels, What are the Touch Panels In case of touch p...

What are the Touch Panels In case of touch panels, displayed objects or screen positions is allowed to be selected with the touch of a finger. A typical application of touch pa

Software engineering, specialization,ggeneralization and aggregation of rai...

specialization,ggeneralization and aggregation of railway reservation system?

Floating point arithmetic pipelines, Floating point Arithmetic pipelines ...

Floating point Arithmetic pipelines Floating point computations are the finest candidates for pipelining. Take the instance of addition of two floating point numbers. Following

Explain the accuracy of an ADC, Explain the Accuracy o f an ADC. Ans...

Explain the Accuracy o f an ADC. Ans Accuracy- The accuracy of D to A converter is the difference among actual output voltage and the expected output voltage in D to A c

Critical path analysis, Given the information provided in Table 1: ...

Given the information provided in Table 1: Prepare an Activity on the Node (AON) Network Diagram ( I recommend you  use MS Project or any drawing tool); Prepare

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