A user interface (UI) refers to the part of an operating system, program, or device that allows a user to enter and receive information. A text-based user interface (see the image to the left) displays text, and its commands are usually typed on a command line using a keyboard.

What are the 3 types of user interfaces?

These are:

• Graphical User Interfaces (GUI)
• Command Line Interfaces (CLI)
• Form-based interfaces.
• Menu-based interfaces.
• Natural language interfaces.

Which is GUI operating system?

A GUI (graphical user interface) is a system of interactive visual components for computer software. … A GUI is considered to be more user-friendly than a text-based command-line interface, such as MS-DOS, or the shell of Unix-like operating systems.