What is an Operating System

CS 162: Operating Systems and System Programming (Spring 2015, UC Berkeley)

Instructor: Professor John Kubiatowicz.

What is an Operating System?

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: Special layer of software that provides application software access to hardware resources

• Convenient abstraction of complex hardware devices

• Protected access to shared resources

• Security and authentication

• Communication amongst local entities

OS Basics: "Virtual Machine" Boundary

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