operating systems Flashcards
what is CLI and GUI
both are interfaces for operating systems and used to control hardware and software
advantages of CLI (command line interface)
-3 marks
.used in the direct communication with the computer
.the user is not restricted to a number of pre-determined options
.it it possible to alter computer configuration settings
disadvantages of CLI
-3 marks
.the user needs to learn a number of commands
.all commands need to be typed which takes time
.each command must be typed in using the correct format
advantages of GUI (graphical user interface)
-2marks
-the user does not need to learn any commands
-it is more user-friendly
disadvantages of GUI
-4 marks
-uses up more computer memory than CLI
-the user is limited to the icons provided on the screen
-needs a more complex operating system
-GUI needs more processing power
define dialogue based interface
operating system that uses the human voice to give commands to
advantages of dialogue based interface
-2 marks
-very useful for people with disabilities
-use as a security feature because voice recognition could be used to identify the person
disadvantages of dialogue based interface
-3 marks
-unreliable, not many commands are recogised
-complex to set up
-user needs to know which commands can be used
define gesture based interface
it allows humans to interface with computer in a more natural fashion without the need for any mechanical devices
disadvantages of gesture based interface
-3 marks
-possible for unintentional movement to be picked up
-only works fairly near to the camera or sensor
-may only accepted a limited number of movements
advantages of gesture based interface
-3 marks
-replaces mechanical input devices
-no physical contact required
-doesn’t require training to interface with computer
