Effective Modular Design
A module is the essential part of any modular design. It is a logically separable part of a program. It is a program unit that is discrete and identifiable with respect to compiling and loading. So a module can be a macro a function a procedure ( or subroutine) a process or a package. In system which use functional abstraction a module is usually a procedure of function or a collection of these all.
To produce the effective modular design. Some criteria must be used to select modules so that the modules support well defined abstractions and are solvable and modifiable separately. In fact modularity has become an accepted approach in all software engineering disciplines. It reduces the complexity, heddles properly the software maintenance and results in the easier implementation by parallel development of different parts of the system. Here we will discuss some important criteria that will lead us to design the effective modularity.
1. Module types
2. Functional Independence
3. Cohesion
4. Coupling
1. Module Types
Before discussing the module types we should understand the various module operational features. As it is previously stated that abstraction and information hiding are used to define modules within software architecture. Both of these attributes must be converted into module operational features. There are total of three module operational features.
1.Time History of incorporation
2.Activation Mechanisms
3.Pattern of Control
1. Time History of Incorporation : It refers to the time at which a module is involved within a source language description of the software. So , basically this feature is related to the time. For an example a module made as a macro will be included in the program when any reference will be made in developer supplied code.
2. Activation Mechanism: It refers to the method which will activate a particular code at the time of reference. There are two activation mechanisms. First one is a conventional approach in which a module in invoked by call reference second one is used nowadays for real time systems in which a module may be invoked by interrupt. Like in Windows operating system we open a notepad, work on it now if we want to open more notepad then we will interrupt the first one discontinue its current processing and will open new one . so activation mechanisms are important to be used because they can affect the program structure.
3. Pattern of Control : Pattern of control of a module is defined as a manner in which it is executed internally. Traditionally a single entry and exit for modules is defined and modules are executed sequentially. But now the trend has changed. More sophisticated approaches have been introduced like a module may be re-entrant that is a module is designed so that it doesn't in any way modify itself or the local addresses that it references. So a single module maybe used by more than one task concurrently.
Within a structure a module may be of three types:
1. Sequential Module : In a sequential module the statements are executed one by one in a serial manner. No interruption will occur. such type of modules are most commonly used by subprograms. Subroutines functions procedures etc.
2. Incremental Module: An in ceremonial model is also called as the co routine. It can be interrupted prior to completion by application software and then again restarted at the point of interruption. It maintains an entry Point that allows the program to restart at the point of interruption. Example of this mode is interrupting Driven systems.
3. Parallel Module: A parallel module is also known as co routine which can be executed parallel with another module in concurrent multiprocessor environment. Such type of module is used when two or more CPU work parallel and perform some typical and high speed computation.
The last two module types require special design approaches that is why they are called as the non hierarchical or homologous structures.
Latest technology based Software Engineering Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Effective Modular Design homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Effective Modular Design, project ideas and tutorials. We provide email based Effective Modular Design homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Effective Modular Design. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Software Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the software engineering assignments, which may help you to solve your complex issues of Effective Modular Design. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
www.tutorsglobe.com offers phosphorus analogs of amines homework help, phosphorus analogs of amines assignment help, online tutoring assistance, organic chemistry solutions by online qualified tutor's help.
tutorsglobe.com treatment of leishmania assignment help-homework help by online leishmania tutors
Sequencing of Peptide tutorial all along with the key concepts of sequencing peptides and proteins, Steps to Sequencing, Deciphering the Complete Primary Structure
tutorsglobe.com gluconeogenesis of lactic acid assignment help-homework help by online gluconeogenesis tutors
It is importance asking why cash is so important. Nevertheless, the cash is just an asset that the business requires to assist it to function. In that sense, it is no dissimilar from inventories or non-current assets.
tutorsglobe.com importance of time-value of money assignment help-homework help by online time value of money tutors
Theory and lecture notes of requency Distributions and Graphs all along with the key concepts of Grouped Frequency Distributions, Class Limits, Class Boundaries, Histogram and Ogive. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Frequency Distributions and Graphs.
Holography tutorial all along with the key concepts of Holography-The process, Production of a Hologram, Reconstruction of Image and Applications of Holography
Volumetric Analysis tutorial all along with the key concepts of Principle, Requirements, Procedure, Observations and Results, Treatment of Results, Experiment 2B
Theory and lecture notes of Problems in NP-complete all along with the key concepts of problems in np-complete, Complexity P & NP, CLIQUE theorem. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Problems in NP-complete.
Biodegradations and Recycling of Polymers tutorial all along with the key concepts of Biodegradations in polymers, Recycling, Chlorine attack acetal resin plumbing joints, Ozone cracking in natural rubber tubing
Introduction to the Systematic of Insects and Mites tutorial all along with the key concepts of Objectives of Classification, Elements of Classification, General Classification of Insects, Class Insecta, Subclass Apterygota, Subclass Pterygota and General Classification of Mites
Controlling the costs, already pre-determined on the basis of assumption of reasonable level of efficiency taking the past, present and future into account is the main focus of cost control.
www.tutorsglobe.com offers graphical design notation homework help, assignment help, case study, writing homework help, online tutoring assistance by computer science tutors.
tutorsglobe.com fleshy xerophytes assignment help-homework help by online xeric habitats characterization tutors
1961733
Questions Asked
3689
Tutors
1472314
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!