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Silberschatz, Galvin and Gagne ©2005

Operating System Concepts

Computer System Structure

Computer system can be divided into four components

Hardware – provides basic computing resources

CPU, memory, I/O devices

Operating system

Controls and coordinates use of hardware among various applications and users

Application programs – define the ways in which the system resources are used to solve the computing problems of the users

Word processors, compilers, web browsers, database systems, video games

Users

People, machines, other computers

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