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GE 393 Software Design

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

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GE 393 Software Design

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  1. GE 393Software 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

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