What Does an Operating System Do?
The operating system is the software that controls all the resources of a computer system. For example it:
1. Assigns the needed hardware to programs
2. Schedules programs for execution on the processor
3. Allocates the memory required for each program
4. Assigns the necessary input and output devices
5. Manages the data and program files stored in secondary storage
6. Maintains file directories and provides access to the data in the files
7. Interacts with the users
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