Types of human-computer interface

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Command line/driven interface
Where you have to type in certain commands in a certain language in order to get the computer to do something
Commands precise for computer to understand
Difficult for inexperinced users
Advantages: quicker
Disadvantages: Difficult for beginners to use, have to remember instructions

Graphical User interfaces
Easy to use
Enter commands by pointing and clicking objects on screen
Windows and Mac
Windows: Screen divded into areas called Windows
Icons: Small pictures that represent commands files or windows
Menus: Allow a user to make selections from a list
Pointers: Little arrow that appears when using Windows
Desktop: Working area of GUI and where all the icons are situated 
Drag and Drop: Allows user to select objects and drag them so you can perform certain operations
Taskbars: Shows programms that are open 
Advantages: No language needed, use of icons, easier to use mouse
Disadvantages: More memory needed, increased processing requirements

Menu Driven Interface
Presented with a list of options and they can type the lettor or number of their selection
Advantages: Simple interface, very easy to use
Disadvantges: Only suitable where there are a few iterms to select

Form-driven interfaces
Used to collect informtaion from a user in a step-by-step manner
User supplies information by typing it into a form
Validation checks ensure the customer only enters


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