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

Use of arrays in assembly, An array is referencing using a base array value...

An array is referencing using a base array value as well as an index. To simplify addressing in arrays 8086 has provided two index registers for mathematical computations viz. BP a

State in brief about virtual memory, What is Virtual memory The term v...

What is Virtual memory The term virtual memory signifies something that appears to be present though actually it is not. Virtual memory technique enables users to use more mem

What are the data types of the external layer, What are the Data types of t...

What are the Data types of the external layer? The Data types of the external layer are :- ACCP, Char, CLNT, CUKY, CURR, DATS, DESC, FLTP, INT1, INT2, INT4, LANG, LCHR, L

What is the use of digital switch, What is the use of digital switch? ...

What is the use of digital switch? Digital switch: This is a device which handles digital signals generated at or passed via a telephone company’s central office further

Trace the pseudo-code, Consider the following pseudo-code segment. 1.  i...

Consider the following pseudo-code segment. 1.  input y {y is a three-digit hexadecimal number} 2.  d ← 0 3. for i = 1 to 3      3.1. char ← i th character from y readin

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 abstract class, What is an interface and what is an abstract class?...

What is an interface and what is an abstract class? Please, expand by examples of using both. Explain why?   Abstract classes are closely related to interfaces. They are classe

Various threats posed by server in client server environment, Explain vario...

Explain various threats posed through servers into a client server environment. Server Destroyed within an Accident: Power failures, Leaking pipes and equipment failures are no

What is an assembler, An assembler is? Ans. An assembler is Machine dep...

An assembler is? Ans. An assembler is Machine dependant.

How to manage the web based projects, How to manage the web based projects?...

How to manage the web based projects? Many project management applications contain additional functions useful in the management of group projects. These features may contain g

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