Is the interface between the operating system and the user necessarily a graphical interface?

The interface between the operating system and the user is not necessarily a graphical interface, because the operating system is classified according to the user interface, which can be divided into "job control language", "keyboard commands" and "graphical user interface".

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1. Operating systems are classified according to user interface and can be divided into job control Languages, keyboard commands, and graphical user interfaces.

2. The user interface of the operating system is the external mechanism provided by the operating system for users to interact with the computer. The user can use this mechanism and the means provided by the system to control the system where the user is located.

3. Job control language: It is a command language, including commands for job control and commands for resource requests.

4. Keyboard command: It is an operation command provided by the operating system to the user. The user can directly control and intervene in the running of the program through this command.

5. Graphical user interface: The graphical user interface is a good user interaction interface. It integrates menu drive, icon drive, object-oriented technology, etc. to form a window operating environment with pictures and texts.

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