For some interface software designers are still viewed as an add-on when the whole program has been written as human-computer interaction specialists consider programming the final task after the prototype of many interfaces have been designed and evaluated. This book bridges the gap between the community by showing how to design the screen with a systematic way so they are easy to understand and support efficient user interface. Rather than just showing the reader how to design an interface, the book details how to actually create a fully functional interface putting theory into practice and demonstrate the problem designers face when working in real world situations. Prototyping and iterative design 3. Mental models and interface design Part B: Systematic Interface Design 5. Virtual windows design 7. Function design 8. Reflections on user interface design Part C: Additional Design Issues 10. Designing an e-mail system 12. Demonstrate how to measure usability by explaining and giving examples of various techniques of evaluation? Include usability testing and heuristic evaluation? Showing how to design and problem tracking through the different stages so that problems can be identified earlier? Interface design functions: add button, menu etc.