Prototyping.sanjAY

7/31/2019 Prototyping.sanjAY

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Prototyping method

Information system management

Presentation By:Sanjay sahai

Suryadeo kumar


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Topic for discussion

Define Prototyping

Prototyping benefits Types of prototypes

Lessons learnt


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Prototyping Defined

Prototyping is the process of quickly putting together aworking model (a prototype) in order to test variousaspects of a design, illustrate ideas or features andgather early user feedback.

Prototyping is a method used by designers to acquire

feedback from users about future designs.It is a incomplete versions of the software program

being developed.

Prototyping is an iterative process that is part of the

analysis phase of the systems development life cycle.
http://www.youtube.com/watch?v=JvLW51zLTVghttp://en.wikipedia.org/wiki/Softwarehttp://www.colorado.edu/infs/jcb/class/analysis.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/sysdevel.htmlhttp://www.colorado.edu/infs/jcb/class/analysis.htmlhttp://www.colorado.edu/infs/jcb/class/analysis.htmlhttp://www.colorado.edu/infs/jcb/class/analysis.htmlhttp://www.colorado.edu/infs/jcb/class/analysis.htmlhttp://en.wikipedia.org/wiki/Softwarehttp://en.wikipedia.org/wiki/Softwarehttp://en.wikipedia.org/wiki/Softwarehttp://www.youtube.com/watch?v=JvLW51zLTVg


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Prototyping

Design.

Actual

Design.


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Prototyping benefits Improved system usability

Closer match to the system needed

Improved design quality Improved maintainability

Reduced overall development effort


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Prototyping process


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Types of prototyping

Throw-away Prototyping

Evolutionary Prototyping Low Fidelity Prototyping

High Fidelity Prototyping


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Throw Away Prototype Throw Away Prototype is developed from the initial requirements but

is not used for the final project.

Written specifications of the requirements

Some developers believe that this type is a waste of time because youdont use it.

Regardless if prototype is discarded or kept for production, you mustuse a easy to use language.


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Outline

requirements

Develop

prototype

Evaluate

prototype

Specify

system

Develop

software

Validate

system

Deliveredsoftwaresystem

Reusablecomponents


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Evolutionary Prototype Evolutionary prototyping is consider the most fundamental form of

prototyping.

Evolutionary prototyping main concept is to build a robust prototypeand constantly improve it.

Objective to deliver a working system to the end user.

According to Steve McConnell, "evolutionary delivery is a lifecyclemodel that straddles the ground between evolutionary prototyping andstaged delivery."


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Low-fidelity Prototyping Low-fidelity prototyping is generally limited function, limited

interaction prototyping effort.

They are constructed to depict concepts, design alternatives and screenlayouts. They are intended to demonstrate general look and feel of theinterface.

They are created to educate , communicate and inform, but not totrain, test or serve as a basis for which to code.

Low fidelity prototyping is used early in the design cycle to showgeneral conceptual approaches without much investment indevelopment.


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An example of a Low Fidelity Prototype showing a sign in screen


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An example of a high Fidelity Prototype showing a sign in screen


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Key LearningA prototype can be used to give end-users a concrete

impression of the systems capabilities

Throw-away prototyping is used to understand thesystem requirements

In evolutionary prototyping, the system is developedby evolving an initial version to the final version

Prototyping is essential for parts of the system such asthe user interface which cannot be effectively pre-specified. Users must be involved in prototypeevaluation


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Questions

Documents

Prototyping.sanjAY