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Thursday, January 9, 2020

Operating System Introduction


Operating System

 A program that acts as an intermediary between a user of a computer and the computer hardware.
 An operating System is a collection of system programs that together control the operations of a computer
system.
Some examples of operating systems are UNIX, Mach, MS-DOS, MS-Windows, Windows/NT, Chicago, OS/2, MacOS, VMS, MVS, and VM.

Operating system goals:
• Execute user programs and make solving user problems easier.
• Make the computer system convenient to use.
• Use the computer hardware in an efficient manner.

Computer System Components

1. Hardware – provides basic computing resources (CPU, memory, I/O devices).
2. Operating system – controls and coordinates the use of the hardware among the various application
programs for the various users.
3. Applications programs – Define the ways in which the system resources are used to solve the computing
problems of the users (compilers, database systems, video games, business programs).
4. Users (people, machines, other computers).


Abstract View of System Components
















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