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CBSE Class 9 Computer Applications Question 4 of 30

Basics of Operating System — Question 4

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Question 4

Graphical user interfaces (GUIs) are found on many computers' operating systems.

(a) Why do computers need a user interface ?

(b) Give one input device, other than a keyboard, that can be used with a graphical user interface.

(c) Give four features of a graphical user interface.

Answer

(a) A user interface provides a way in which an operating system interacts with its users. A user interface makes computers accessible, user-friendly, and efficient. They enable users to interact with computers in a more natural and intuitive way, facilitating a wide range of tasks and applications for various types of users.

(b) Mouse is used with a graphical user interface to point, click, drag, and interact with graphical elements on the screen, making it a fundamental input device for GUI-based systems.

(c) The four features of a graphical user interface are as follows: —

  1. Windows — one can move around the screen
  2. Icons — one can click on to load programs and files
  3. Menus — offer options to choose from
  4. Pointers — one can move around the screen.