Graphical User Interface

GUI stands for Graphical User Interface. It provides a graphical interface for the user to interact with the computer. It was developed in the late 1970s by the Xerox Palo Alto research laboratory and deployed commercially in Apple's Macintosh. Graphical user interfaces would become the standard of user centered design in software application programming, providing users the capability to intuitively operate computers and other electronic devices through the direct manipulation of graphical icons such as buttons, scroll bar, windows, tabs, menus, cursors and mouse.

Example of GUI are Microsoft Windows, macOS, Ubuntu Unity and GNOME Shell for desktop environments and Android, Apple's iOS, BlackBerry OS, Windows 10 Mobile, Palm OS-WebOS and Firefox OS for smartphones.

Feature and advantage of GUI

Non technical convenience
Drag and drop function
It looks better than a text interface
Use easy to understand words for user type
Easy to use
People with disabilities
Have a Reference document.

Disadvantage of GUI

High costs, complexity in development
Slower than command line programs
Special attention is required
Use a flat screen

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