Introducing a proven user interface design model for the design and development of high-quality user interfaces, this new edition is a practical guide to designing traditional graphical user interfaces (GUIs) and object-oriented graphical user interfaces, plus high-quality character-based interfaces, and state-of-the-art multimedia user interfaces. It presents detailed coverage of how people process information - and how human sensory and cognitive strengths and weaknesses affect the way users experience computer systems.