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Styles of User Interface
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Learning Objectives:By the end of this topic you should be able to:
• describe the characteristics of different styles of user interface,
• describe appropriate uses of different styles of user interface.
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Styles of Interface
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Styles of Interface
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Styles of Interface
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What are the characteristics of these Styles of Interface?
• Command Based
• Forms
• Dialogue
• Natural Language
• WIMP
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Command Based (CLI)• command prompt on screen
- e.g. MSDOS prompt
• commands are typed - text-based via keyboard
• need to know command language- only for experts- technical problem solving
• requires very little processing power
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Forms• represents piece of paper to fill in on-screen
- used for data entry- e.g. registering as new member
• prompts giving assistance- labels
• boxes to enter data• user can be given choices
- list boxes, drop-down menus, radio buttons
• validation checks can be made- certain fields can be made compulsory
• input useful for novice users
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Dialogue• dialogue box shown• prompts given• questions asked
- choices to be made• responses given
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Natural Language
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Natural Language• user types or speaks in normal everyday language
- computer responds to commands (or reserved words)- e.g. Microsoft Help & Google search engine
• useful for novice users - no need to understand the computer software to use it.
• vocal input (via microphone): - useful for physically handicapped people.
• e.g. writing a letter/searching the web
- difficult to use in noisy areas- need to train software to recognise accents
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GUI
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GUI• Graphical User Interface (GUI)• WIMP
Window: area of the screen contains grouped icons/elementsIcons: use of pictures to represent objects or actionsMenus: predefined, grouped list of options (pop-up/drop down)Pointers: pointer shape indicates action to be performed
• memory & processor intensive• direct manipulation interface
- ‘drag & drop’
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GUI
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GUI
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Menus/SubmenusFeatures:• series of related items which can be
selected with pointer- that drop down/pop up- can be cascaded – contextual- submenus
• structured into options- separated by function
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Menus/Submenus
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Menus/Submenus