Explain the term overlays, Computer Engineering

Assignment Help:

Explain the term Overlays.

An overlay is an element of program that has the same load origin as several other part of the program. These are used for reduce the main memory requirement of a program. If the problem arises when the size of program exceeds the memory size, so overlays are used. Structure of these programs contains a permanently resident portion, termed as the root.

A set of overlays

To begin with, the root is loaded in memory and specified control for the reasons of execution. Another overlays are overwrites a previously loaded overlay along with similar load origin, this reduces memory requirement of a program. This is also possible to execute programs that size exceeds the memory size.


Related Discussions:- Explain the term overlays

Minimax search, Minimax search: Always notice there that the process a...

Minimax search: Always notice there that the process above was in order for player one to choose his and her first move for that. The whole entire process would require to fre

Information security, i wants to know the methods and process of substituti...

i wants to know the methods and process of substitution and transposition cipher with examples.

How are comparisons done in 8086 assembly language, Q. How are comparisons ...

Q. How are comparisons done in 8086 assembly language? There is a compare instruction CMP. Though this instruction just sets the flags on comparing two operands (both 16 bits

What is dom, DOM is the Document Object Model (DOM) which is an interface s...

DOM is the Document Object Model (DOM) which is an interface specification handled by the W3C DOM Workgroup that explains an application independent mechanism to access, parse, or

Uninformed search strategies - artificial intelligence, Uninformed Search S...

Uninformed Search Strategies: To be able to undertake an unaware search, there is really important that the entire agent needs to know is the primary state, then the possible

What is pointers function, Visual basic applications have very rich and fle...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

Explain pre-emptive scheduling, Explain Pre-emptive scheduling? Pre-em...

Explain Pre-emptive scheduling? Pre-emptive scheduling: in its approach, center processing unit can be taken away from a process if there is a require while in a non-pre-empt

What is computer to computer communication, Computer to computer communicat...

Computer to computer communication is: (A)  Simplex                                   (B)  Duplex (C)  Half Duplex                             (D)  Both Duplex and Half D

What is cursor, What is Cursor? Cursor is a database object used by app...

What is Cursor? Cursor is a database object used by applications to manipulate data in a set on a row-by- row basis, instead of the typical SQL commands that operate on all the

Shared-memory programming model, Q. Shared-memory programming model? In...

Q. Shared-memory programming model? In shared-memory programming model tasks share a common address space that they read and write asynchronously. Several mechanisms like semap

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