Britannica Sources used in this answer

What is a graphical user interface on a personal computer?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

A graphical user interface (GUI) is a computer program that allows users to interact with a computer through visual elements such as symbols, icons, menus, and pointing devices, rather than relying on complex text-based commands.12

By utilizing visual metaphors—such as a "desktop" where files are represented by icons—the GUI makes computing more intuitive, natural, and easier to learn. Key components often include:2

  • Pointing devices: Such as a mouse, used to navigate the screen and select items.2
  • Windows: Screen areas that display different documents or applications.2
  • Menus: Lists of commands that can be accessed via a mouse.2
  • Bit mapping: A technique where everything on the screen is rendered as a picture, enabling features like WYSIWYG (what you see is what you get).2

The GUI evolved through the work of innovators like Douglas Engelbart and researchers at PARC, eventually becoming the standard for personal computers following the success of the Apple Macintosh and Microsoft Windows operating systems.2