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 is common language runtime, What is "Common Language Runtime" (CLR)?  ...

What is "Common Language Runtime" (CLR)?  CLR is .NET equivalent of Java Virtual Machine (JVM). It is the runtime that changes a MSIL code into the host machine language code,

Is strategy - information system, IS strategy - Information System As ...

IS strategy - Information System As an operations manager when attempting to navigate your organisation through the information landscape and make best use of the available sy

Android mobile application, Students are needed to work in group of 3 and m...

Students are needed to work in group of 3 and make an Android mobile application falling under the following categories: Multimedia o    Eg: Camera app, mp3 player, ga

Explain the relationship between translated & linked address, Explain the r...

Explain the relationship amongst Translated address and Linked address. Translated address: Address assigned through the translator Linked address: Address assigned

Convert the octal number 7401 to binary, Convert the octal number 7401 to B...

Convert the octal number 7401 to Binary. Ans. Octal number 7401 to Binary conversion: Every octal digit represents 3 binary digits. To change an octal number to binary number,

Identifying constraints between objects, Identifying Constraints between Ob...

Identifying Constraints between Objects In a system, there are few boundaries to work on. Boundaries or Constraints are functional dependencies among objects which are not con

Determine reduced boolean equation and the karnaugh map, Determine reduced ...

Determine reduced Boolean equation and the Karnaugh Map? Illustration : Determine reduced Boolean equation and the Karnaugh Map for the truth table shown below:

Explain about the term middleware, Explain about the term Middleware. M...

Explain about the term Middleware. Middleware is the term frequently used to explain the application or business logic present within an application server. Unfortunately, simi

Find out the access time of ROM using bipolar transistors, The access time ...

The access time of ROM using bipolar transistors is about ? Ans. About 1 µ sec is the access time of ROM using bipolar transistors.

Explain bit slice ALUs, Bit Slice ALUs It was possible to manufacture ...

Bit Slice ALUs It was possible to manufacture smaller like 4 or 8 bits fixed point ALUs on a single IC chip. If these chips are constructed as expendable types then employing

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