Chapter01-OS7e - Operating Systems: Internals andDesign...

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Chapter 1 Computer System  Overview Seventh Edition By William Stallings Operating  Systems: Internals  and Design  Principles
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Operating Systems: Operating Systems: Internals and Design Principles Internals and Design Principles “No artifact designed by man is so convenient for this kind of functional description as a digital computer. Almost the only ones of its properties that are detectable in its behavior are the organizational properties. Almost no interesting statement that one can make about an operating computer bears any particular relation to the specific nature of the hardware. A computer is an organization of elementary functional components in which, to a high approximation, only the function performed by those components is relevant to the behavior of the whole system.” THE SCIENCES OF THE ARTIFICIAL , Herbert Simon
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Operating System Operating System Exploits the hardware resources of one or more  processors to provide a set of services to system  users Manages secondary memory and I/O devices
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          Basic Elements Basic Elements
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Processor Processor
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Main Memory Main Memory Volatile Contents of the memory is lost  when the computer is shut  down Referred to as real memory or  primary memory
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I/O Modules I/O Modules
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                        System Bus System Bus Provides for communication  among processors, main  memory, and I/O modules
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Top-Level  Top-Level  View View
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            Microprocessor Microprocessor Invention that brought about desktop and  handheld computing Processor on a single chip Fastest general purpose processor Multiprocessors Each chip (socket) contains multiple  processors (cores)
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Graphical Processing  Graphical Processing  Units (GPUs) Units (GPUs) Provide efficient computation on arrays of  data using Single-Instruction Multiple Data  (SIMD) techniques Used for general numerical processing Physics simulations for games Computations on large spreadsheets
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Digital Signal Processors Digital Signal Processors
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This note was uploaded on 12/14/2011 for the course CS 490 taught by Professor Weisskop during the Fall '11 term at University of Alabama - Huntsville.

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Chapter01-OS7e - Operating Systems: Internals andDesign...

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