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

The components of i-way infrastructure, What are the components of I-way In...

What are the components of I-way Infrastructure? There are three mechanism of the I-way infrastructure: Consumer access equipment Local on-Ramps Global informa

What is mini frame size where propagation speed is 200 m µs, A CSMA/CD bus ...

A CSMA/CD bus spans a distance of 1.5 Km. If data is 5 Mbps, What is minimum frame size where propagation speed in LAN cable is 200 m µs. Usual propagation speed in LAN cables

Explain the number unobtainable tone in strowger telephony, Explain the num...

Explain the number unobtainable tone in strowger telephony with waveforms and the timings. In the following figure illustrates the number unobtainable tone that is continuous

What are function modules, What are function modules? Function m...

What are function modules? Function modules are general-purpose library routines that are available system-wide.

Explain 100 line exchange with two-motion line finders, Explain 100 line ex...

Explain 100 line exchange with two-motion line finders. Design: In such design, here are 24 line finders. When any of the 100 subscribers has to find access to any of the 24

What is control panel, A system utility that comes with Windows that permit...

A system utility that comes with Windows that permits the use to change a variety of dissimilar Windows and system settings.

Show the advantages of joint application development, Q. Show the advantage...

Q. Show the advantages of Joint Application Development? The following are the numerous advantages of Joint Application Development: Actively includes management and use

Control-centered virtual manufacturing, Control-Centered Virtual Manufactur...

Control-Centered Virtual Manufacturing This is the addition of simulations to control actual processes and models, permitting for seamless simulation for optimization throughou

Spmd model for programming, Q. SPMD model for programming? A normal ass...

Q. SPMD model for programming? A normal assumption was that it must be possible and not too hard to capture the SPMD model for programming MIMD computers in data parallel langu

Design a sequential circuit with two flip-flop and one input, Design a coun...

Design a counter modulo 4 (sequential circuit with two flip-flops and one input U) which work like that: 1. When U=0, the state of the flip-flop does not change. 2. Whe

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