An operating system (OS) is a collection of system programs that together control the operation of a computer system.
Operating system goals:
–Execute user programs and make solving user problems easier.
–Make the computer system convenient to use.
–Use the computer hardware in an efficient manner.
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Unit
1 : Operating system Concept
unit
2 : processes
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3 : Threads
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4 : Inter Process Communication
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5 : Scheduling
unit
6 : DeadLock
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7 : Memory Management
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7.1 : Virtual Memory
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7.2 : Page Replacement
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7.3 : Segmentation
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8 : Disk Management
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9 : Files
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10 : I/O Management
What is a Process?
The program in execution.A program is an inanimate entity; only when a processor “breathes life”into it does it become the “active” entity, we call a process.
