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Why we need to learn Operating System

Why we need to learn Operating System. Hardware – provides basic computing resources (CPU, memory, I/O devices). Chapter 1: Introduction. What is an Operating System? Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems

cynthia-preston
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Why we need to learn Operating System

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  1. Why we need to learn Operating System Hardware – provides basic computing resources (CPU, memory, I/O devices). Operating System Concepts

  2. Chapter 1: Introduction • What is an Operating System? • Mainframe Systems • Desktop Systems • Multiprocessor Systems • Distributed Systems • Clustered System • Real -Time Systems • Handheld Systems • Computing Environments Operating System Concepts

  3. What is an Operating System? • A program that acts as an intermediary between a user of a computer and the computer hardware. • Operating system goals: • Execute user programs and make solving user problems easier. • Make the computer system convenient to use. • OS as resource manager • OS as extended machine • Use the computer hardware in an efficient manner. Operating System Concepts

  4. Abstract View of System Components Operating System Concepts

  5. Memory Layout for a Simple Batch System Operating System Concepts

  6. Multiprogrammed Batch Systems Several jobs are kept in main memory at the same time, and the CPU is multiplexed among them. Operating System Concepts

  7. OS Features Needed for Multiprogramming • I/O routine supplied by the system. • Memory management – the system must allocate the memory to several jobs. • CPU scheduling – the system must choose among several jobs ready to run. • Allocation of devices. Operating System Concepts

  8. Symmetric Multiprocessing Architecture Operating System Concepts

  9. ng: all N hosts are running the application. General Structure of Client-Server Operating System Concepts

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