describe operating system as a user interface
Answers
Explanation:
User Interface
All graphics based today, the user interface includes the windows, menus and method of interaction between the user and the computer. Prior to graphical user interfaces (GUIs), all operations were performed by typing in commands. However, command-line interfaces are not extinct. In fact, they are included in all major operating systems, and technical operations are commonly executed from the command line by programmers and administrators. Command line statements often get the job done more efficiently than with a GUI, and they are easily grouped in a file and executed all at once. See batch file, PowerShell and shell script.
Operating systems may support optional interfaces. Although the overwhelming majority of people work with the default interface, different "shells" offer variations of functionality, and "skins" provide different appearances. See GUI, shell and skin.