User Interface Design Saranya.V AP/CSE,Sri Vidya College of Engineering & Technology, Virudhunagar
UID• Proper interface design begins with careful analysis of the user.• Proper analysis of task• Proper analysis of Environment.• Prototyping is a common approach to user interface design.
Place User in Control• Don’t force the user to perform unnecessary actions or undesired actions.• Hide technical internals from the user.• Design for direct interaction.• Allow the reversible process.• Provide flexile interactions.
Reduce User Memory Load• Reduce demands on Short Term Memory• Establish meaningful defaults.• Define short cuts• Create meaningful layout• Improve progressive fashion (information)
Make interface consistent• Allow user to put the current task into a meaningful context.• If past interaction models have created user expectations, do not make changes unless there is a good reason to do so.
UI Design Models• Design Model: architecture, procedural, interface models• User Model: user profiles, frequent users interests.• System Perception: User’s mental image of system.• System Image: look and feel images.
Interface Design Issues• System response time• User help facilities.• Error information handling
UI Evaluation cycle• Preliminary design• Build first interface prototype.• User evaluates interface• Evaluation studied by designer• Design modifications made• Build next prototype.• If interface is not complete then go to step 3.