14HCI人机交互 高级软件工程课件.ppt

Advanced Software Engineering-For Qilu Software College, Shandong University Lecture 14 Human Computer Interaction What is Interaction Design? Aims Explain the difference between good and poor interaction design. Describe what interaction design is and how it relates to human-computer interaction and other fields. Explain what usability is. Describe what is involved in the process of interaction design. Outline the different forms of guidance used in interaction design. Enable you to evaluate an interactive product and explain what is good and bad about it in terms of the goals and principles of interaction design. What is interaction design? Designing interactive products to support people in their everyday and working lives Sharp, Rogers and Preece (2002) The design of spaces for human communication and interaction Winograd (1997) Analogue: Architect vs. civil engineers Designing a house vs. building a house Interaction designers vs. software engineers Designing an interactive software vs. implementing the software Goals of interaction design Develop usable products Usability means easy to learn, effective to use and provide an enjoyable experience Involve users in the design process Example of bad and good design Elevator controls and labels on the bottom row all look the same, so it is easy to push a label by mistake instead of a control button People do not make same mistake for the labels and buttons on the top row. Why not? Why is this vending machine so bad? Need to push button first to activate reader Normally insert bill first before making selection Contravenes well known convention What to design Need to take into account: Who the users are What activities are being carried out Where the interaction is taking place Need to optimise the interactions users have with a product Such that they match the users activities and needs Understanding users’ needs Need to take into account what people are good and bad at Consider what might help people