Software

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Software

• Topic 1 - Interface Design

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Software

• Software is the detailed instructions used to
  direct the hardware to perform a particular task.
  
• A computer needs software to tell it what to do
  and it needs hardware to carry out the actual
  work.

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User Interface

• User Interface is the way the user interacts with
  the software.
• Provide a means of communication between the user
  and the computer.
• Character-based user interface (CLI)
• Graphical user interface (GUI).

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Character-based User Interface

• Requires the user to give instructions using only
  characters.
• The user types the characters using a keyboard.
• Commonly used on devices with a limited amount of
  memory and options for the user.
• It is still widely used on Internet servers

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Character-based User Interface
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Graphical User Interface

• The graphical user interface (GUI), pronounced
  gooey.
• Provides an easy-to-use and consistent interface
  for a range of applications.
• Allows the user to give instructions using a
  mouse, and clicking on icons and menus.

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Advantages of GUI

• Applications developed for a GUI have the same
  consistent appearance to make it easier for
  people to understand and learn how to use a GUI .
• For example Cut, Copy and paste work similarly in
  all programs .
• GUIs are more forgiving. Most dialog boxes have a
  Cancel button and the Undo command

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Disadvantages of GUI

• Require faster processors
• More memory
• More disk space
• Higher quality screens
• The software is more complex to write

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Software

• Interface Design