1. GE 393 Software Design Design Patterns: Elements of Reusable Object Oriented Software By Gamma, Helm, Johnson and Vlissides The practice of Programming, By Brian W. Kernighan Software Creativity, By Robert L. Glass Serious Creativity By Edward de Bono Presented By Agnita Pandian

2. What is Software Design?? The hardest part in software generation It’s a problem-solving activity the world of technology and the world of human purposes---bring the two together

3. Cont… “Beauty is in the eye of the beholder” Software design means different things to different people Is performance important? Is it ease of maintenance? ease of use? security? Modularity?

4. Creativity generates truly great software Human Imagination is the only limit e.g. Lotus Good software comes when you take time to explore the design space of possibilities e.g. Windows So they say, Generating Software is one of the most creative activity by humans e.g. Compilers

5. Software Engineering model Reduces our ability to be creative Methodologies entails repeatable results Reuse of the software Ship dates Simple Example:

6. Why do you need Creativity?? As Edward de Bono argues, "...unless your job involved creativity, you are (eventually) replaceable by a computer." The right design style for the right product gives structure for future Innovation Ease our lifestyles e.g. Put together different modules to make a PC

7. The real concern is……. To design modules that cut development time To design software that runs more efficiently using minimum resources Ultimately, you want to reduce costs…

8. Object Oriented Software Smarter coding Objects Class Inheritance Polymorphism Overloading Encapsulation

9. Creativity Sorting Hash Tables Data Structures Internet Interfacing w/Hardware Testing

10. Learn to be creative Specify completely the user's whole experience Balance your goals and constraints Know the programming language well

11. References Robert L. Glass, Software Creativity; Prentice Hall 1995 Serious Creativity by Edward de Bono Programming Pearls by Jon Bentley Bringing Design to Software Edited by Terry Winograd