User Interface Design

User interface design is one of the most important and one of the most difficult aspects of designing a computer system. It is the contact point between the user and the system and determines to a large extent the usefulness and effectiveness of the system. In this paper, we examine the tools and techniques used for designing user interfaces. As user interface design is to a large extent an art, our goal is to highlight important issues in user interface design and not to prescribe a recipe for designing user interfaces.