A GUI is an acronym for “Graphical User Interface”. A GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse.

The first interactive user interfaces to computers were not graphical; they were text-and-keyboard oriented and usually consisted of commands you had to remember and computer responses that were infamously brief. The command interface of the DOS operating system is an example of the typical user-computer interface before GUIs arrived. ...

Open source software refers to any computer software which source code is available for use or modification as users or other developers see fit. These programs can be used under a license or arrangement such as the public domain that meets the Open source definition.

Open source software is usually developed as a public collaboration and made freely available....

Information is the result of processing, gathering, manipulating and organizing data. In other words, when information is entered into and stored in a computer, it is generally referred to as data; but when the data becomes useful it becomes information....

Computer data is any information in a form suitable for storage in or processing by a computer. Data can be propositions such as numbers, words or images.

Computer data it is used to run programs, store program or system configuration information, and store information....