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Wednesday, March 29, 2017

FUNCTIONS OF AN OPERATING SYSTEM


File Management
One of the functions of the operating system is its ability to manage files efficiently. Thus the operating system manages all the files on the computer. A file is similar to documents and letters kept in file cabinet. It keeps tracks of locations were programs and data are stored within the computer’s memory.

Maintaining Security;
Operations that involve network and larger computers demand an ID and password to each operator to assist him or her gain access to the computer system. The operating system keeps a register of all these IDs so that only people with valid IDs and password can access system. The importance of this is to avoid the usage by unauthorized person have access to system.
Managing Tasks: A computer can perform many tasks simultaneously. One of the ways of doing this is by multi-tasking. Multi-tasking is the ability of a computer to run more than one program at the same time. A typical example is seen by operators listening to music while typing on the same computer.

        In case of networks, the multi-user operating system allows more than one user to access the same data at the same time.

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