Prototyping

1
Prototyping

• Or how to build software in 6 days and rest on
  the 7th
  

2
Agenda

• Short definition
• Why prototypes?
• Prototyping techniques
• Prototyping tools
• Demonstration

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Short definition of prototype (1)

• What the client wants you to build in 12 months
  and in budget.

4
Short definition of prototype (2)

• What you have to show after 10 months and 1.5
  times the budget.

5
Short definition of prototype (3)

• This is the final product, after 26 months and 3
  times the budget.

6
Software prototype

• It is supposed to work
• It does not have a generalized lifetime
• May serve different purposes
• Must be built quickly and cheaply

7
Why prototypes? (1)

• Because
• users dont always understand the technical
  documentation
  
• users dont always know exactly what they want
• developers dont always understand what the users
  want
  
• get faster feedback on design
• experiment
• with alternative
• designs
• fix problems
• before writing code

8
Why prototypes? (2)

• The developers are working closely with the user
  on getting information about
  
• the functionality of the system
• operation sequences
• user support needs
• required representations
• look and feel of the interface

9
Prototyping techniques (1)

• Requirements animation
• Rapid prototyping
• Incremental prototyping
• Evolutionary prototyping

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Prototyping techniques (2)

• Full prototype
• Horizontal prototyping
• Vertical prototyping
• High fidelity prototyping
• Low fidelity prototyping
• Chauffeured prototyping
• Wizard of Oz prototyping

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Prototyping to support design

• Product conceptualization
• Task level prototyping
• Screen design prototyping

12
Software prototyping tools

• Visio
• Visual Basic
• FrontPage
• Dreamweaver
• Cool
• RationalRose
• Etc.

13
Demonstration
14
Summary
15
References

• http//www.acm.org/sigchi/chi95/proceedings/panels
  /mt_bdy.htm
  
• Human-Computer Interaction, Jenny Preece, rogers,
  Sharp, Benyon, Holland and Carey, Addison Wesley,
  1994
  
• The Visual Display of Quantitative Information,
  Tufte, Edward R, Graphics Press, 1992
  
• http//bmrc.berkeley.edu/courseware/cs160/fall97/l
  ectures/09-12-97/sld010.htm