Discuss the principles of user-centered design (UCD) and how they influence the design and development of user interfaces.

How is the growing prevalence of smartphones and tablets with smaller displays affecting user interface design practices?

A graphical user interface is referred described as being "event driven" (GUI). What does this really mean?

What influence do you believe wearable computing will have on the design of user interfaces? For example, would the usage of wearable computing devices alter the importance of certain concepts of user interface design? Will these gadgets need any alterations to existing UI principles? Be precise in your response to the user interface design principles that you are addressing in your response.