Chapter 9, Problem 8SG

Explanation of Solution

User interface:

• The interaction between the user and the computer is provided by a facility in the Operating System (OS) known as user interface.
• It is an important function of the OS.
• There are three types of user interface, namely,
  • Graphical user interface
  • Menu-driven user interface
  • Command-line user interface.
• User interface design defines the interactions between the user and the system...

Program Plan Intro

Graphical User Interface (GUI):

• It is the most popular user interface design in use, which uses graphics and mouse click events to make the programs easier to use for the users.
• The GUI interface will provide the possibility to execute the commands simultaneously.

Natural User Interface (NUI):

• NUI is an invisible user interface that includes complex user interactions.
• It totally depends on the user.
• The user interacts with computer system through instinctive natural actions.
• Its goal is to create continuous interaction between the user and the computer system through invisible interface.

Command-Line Interface (CLI):

• It is a texted-based interface used for controlling and displaying the computer files.
• Commands are used to instruct the operating system to perform the required operations.