What is Graphical User Interface (GUI) ?
GUI stands for graphical user interface. A GUI, which some folks pronounce as 'gooey', is exactly what it sounds like... a graphical way to do stuff. Simply put, a graphical user interface is a way to communicate what you want to a computer application (or computer operating system) using graphical symbols rather than typing the instructions in. GUIs let you work with picture-like items (icons and arrows for example) to tell the computer what you want from it. And, rather than a keyboard (which can leave you guessing what to type next), you get to scoot around a blocky thing on your desk called a mouse, which makes the arrows and icons scoot around on the screen