In the computer operating system, code OS or OS (the second of the synonym English "operating system"), is a set of subroutines and data structures responsible for monitoring and management of hardware components that constitute a computer and programs that run on it.
Usually an operating system provides the user interface software (graphic or text) to access the hardware resources (disks, memory, I / O in general) of the system. This access depends on systems that provide for multi-user , the privileges of each user.
The main task of the operating system is to allow the user, human or not, to interact directly with the machine.
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