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Note for Operating Systems - OS by yash kumar

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Note for Operating Systems - OS by yash kumar

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Yash Kumar
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Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 1 Computer System Overview Patricia Roy Manatee Community College, Venice, FL ©2008, Prentice Hall

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Operating System • Exploits the hardware resources of one or more processors • Provides a set of services to system users • Manages secondary memory and I/O devices

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Basic Elements • Processor – Two internal registers • Memory address resister (MAR) – Specifies the address for the next read or write • Memory buffer register (MBR) – Contains data written into memory or receives data read from memory

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Basic Elements • Processor – I/O address register – I/O buffer register

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