CIS339 EOC Questions - Chapter 12

CIS339 EOC Questions - Chapter 12 - EOC Questions Chapter...

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EOC Questions Chapter 12 Systems Analysis and Design with UML Version 2.0 Chapter 12 Human Computer Interaction Layer Design 1. 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. 2. What are three fundamental parts of most user interfaces? 1.Navigation mechanism - the way the user gives instructions to the system and tells it what to do. 2.Input mechanism - the way in which the system captures information. 3.Output mechanism - the way the system provides information to the user or to other systems. 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. 4. What is white space and why is it important? White space refers to areas on an interface that are intentionally left blank. The more white space on an interface, the less dense the information content. Designer need to try and strike a balance between information content and white space. Some white space is necessary to help the users find things on the interface. Generally, more experienced users need less white space than novice users. Page 1
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EOC Questions Chapter 12 5. Under what circumstances should densities be low? High? Low densities are preferred by infrequent or novice users of an interface. These users will be unfamiliar with the interface and will be helped by having a balance of information and white space on the interface. High densities can be acceptable to experienced users of the interface, because they are highly familiar with the information on the interface and do not need as much white space to help them find what they are looking for. 6. How can a system be designed to be used by experienced and first time users? Experienced users prefer systems that focus on ease of use, while novice users prefer systems that are easy to learn. These two goals are not necessarily mutually exclusive. Generally, systems should be set up so that the commonly used functions can be accessed quickly, pleasing the experienced users. To assist the novice users, guidance should be readily available, perhaps through the "show me" functions that demonstrate menus and buttons.
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