Module O1. Explain three important user interface design principles.The authors list six principles of user interface design:1. Layout - the interface should be a series of areas on the screen that are used consistently for different purposes.2. Content Awareness- the user is always aware of where they are in the system and what information is being displayed.3. Aesthetics- interfaces should look inviting and should be easy to use.4. User Experience- experiences users prefer ease of use, while inexperienced users prefer ease of learning.5. Consistency- users can predict what will happen before a function is performed.6. Minimize Effort- interface should be simple to use.3. Why is content awareness important?Content awareness means that the interface makes the user aware of the information delivered through the interface with the least amount of user effort.This is important because if the user is constantly aware of where he is and what he is seeing, he will find the system much easier to use and his satisfaction will be high.14. Why do we prototype the user interface design?Prototyping helps the users and programmers understand how the system will perform.