Transcription of OPERATING SYSTEMS OVERVIEW - WPI
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OPERATING SYSTEMS OVERVIEW - WPI
1: OPERATING SYSTEMS Overview1 Jerry BreecherOPERATING SYSTEMS OVERVIEW1: OPERATING SYSTEMS Overview2 WHAT IS AN OPERATING system ? An interface between users and hardware - an environment "architecture Allows convenient usage; hides the tedious stuff Allows efficient usage; parallel activity, avoids wasted cycles Provides information protection Gives each user a slice of the resources Acts as a control system OVERVIEW1: OPERATING SYSTEMS Overview3 OPERATING system OVERVIEWThe Layers Of A SystemProgram InterfaceHumansUser Interface/ Privileged InstructionsDisk/Tape/Memory1: OPERATING SYSTEMS Overview4A mechanism for scheduling jobs or processes.
• Distributed Systems - Loosely coupled systems that communicate via message passing. Advantages include resource sharing, speed up, reliability, communication. • Real Time Systems - Rapid response time is main characteristic. Used in control of
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