1.intro-1up - Intro 1 What is an Operating System Three...

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Intro 1 What is an Operating System? Three views of an operating system Application View: what services does it provide? System View: what problems does it solve? Implementation View: how is it built? An operating system is part cop, part facilitator. CS350 Operating Systems Fall 2013
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Intro 2 Application View of an Operating System The OS provides an execution environment for running programs. The execution environment provides a program with the processor time and memory space that it needs to run. The execution environment provides interfaces through which a program can use networks, storage, I/O devices, and other system hardware components. * Interfaces provide a simplified, abstract view of hardware to application programs. The execution environment isolates running programs from one another and prevents undesirable interactions among them. CS350 Operating Systems Fall 2013
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Intro 3 Other Views of an Operating System System View: The OS manages the hardware resources of a computer system.
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