Go to previous pageGo to next page

1.1.4. Unit-Summary

Humans interact with computers. There are seven stages of actions users go through when faced with the task of using a system:

  1. Forming the goal
  2. Forming the intention
  3. Specifying the action
  4. Executing the action
  5. Perceive the system state
  6. Interpret the system state
  7. Semantically evaluating the interaction outcome

User Interface

In computer science and human-computer interaction, the user interface (of a computer program) refers to the graphical, textual and auditory information the program presents to the user, and the control sequences (such as keystrokes with the computer keyboard, movements of the computer mouse, and selections with the touchscreen) the user employs to control the program. (Wikipedia)

Graphical User Interface

"Graphical User Interface is the use of pictures rather than just words to represent the input and output of a program. A program with a GUI runs under some windowing system (e.g. The X Window System, Microsoft Windows, Mac OS). The program displays certain icons, buttons, dialogue boxes etc. in its windows on the screen and the user controls it mainly by moving a pointer on the screen (typically controlled by a mouse) and selecting certain objects by pressing buttons on the mouse while the pointer is pointing at them. " (Linuxjunkies)

Go to previous page
Go to next page