Explain the principles of design, Computer Engineering

Assignment Help:

In structure chart whole application is divided into modules (set of program instructions) and modules are designed according to some principles of design. These are:

Modularity and partitioning: Every system must comprises a hierarchy of modules. Lower level modules are usually smaller in size and scope compared to higher level modules. They serve to partition processes in separate functions.

Coupling: Modules must be loosely coupled. Which means that modules must have little dependence on other modules in a system.

Cohesion: Modules must be highly cohesive. It means that modules must carry out a single processing function.

Span of control: Modules must interact with and manage functions of a limited number of lower level modules. It means that number of called modules must be limited (in a calling module).

Size of Module: Number of instructions present in a module must be limited so that module size is normally small.

Shared use of Functions: Functions must not be duplicated in separate modules may be shared. It means that functions can be written in a single module and can be invoked by any other module when required.


Related Discussions:- Explain the principles of design

Define macros, Define macros.   A macro is a pre-processor directive wh...

Define macros.   A macro is a pre-processor directive which is a program that processes the source code before it passes by the compiler. These are placed in the source program

Ldb need not be defined in the abap/4 dictionary, All nodes in the structur...

All nodes in the structure of LDB need not be defined in the ABAP/4 Dictionary False. One has to describe all nodes in the Dictionary or single has to select all nodes that a

Shell scripting, Write a script called addnames that is to be called as fol...

Write a script called addnames that is to be called as follows, where classlist is the name of the classlist file, and username is a particular student''s username. ./addnames cla

What does the future in gimp, Version 2.8 may bring a combined Transform to...

Version 2.8 may bring a combined Transform tool (Scale, Rotate,Flip and Perspective), more use of Cairo for attractive ant aliased graphics and more usability improvements. We will

Difference between shadow and override in programming, Overriding tell us o...

Overriding tell us only the methods, but shadowing tells us the entire element.

Programming, Write a procedure for each of the following: (i) To find the m...

Write a procedure for each of the following: (i) To find the maximum MAX of the values in the list. (ii) To find the average MEAN of the values in the list. (iii) To find the produ

What is replacement algorithm, What is replacement algorithm? When the ...

What is replacement algorithm? When the cache is full and a memory word that is not in the cache is referenced, the cache control hardware must decide which block should be del

What are the advantages of batch processing, What are the advantages of bat...

What are the advantages of batch processing This has the advantage which jobs can be processed when computer resources are less busy (for example during the evening or at night

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