Intrduction To OS

1. Operating System

1.1. Convenience

1.2. Efficiency

1.3. Ability to evolve

2. Multiprocessor System

2.1. Advantages

2.1.1. Increase throughput

2.1.2. Cost saving

2.1.3. Increased reliability

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4. Real-Time Systems

4.1. Hard real-time

4.2. Soft real-time

5. Serial Processing

5.1. Earliest Computer

5.1.1. No operating system

5.2. Problem

5.2.1. Scheduling

5.2.2. Setup time

6. Parallel System

6.1. Symmetric Multiprocessing

6.1.1. Several processes can run in parallel

6.2. Advantages

6.2.1. Increase throughput

6.2.2. Economical

6.2.3. Increased reliability

6.3. Asymmetric Multiprocessing

6.3.1. Each processor assigned a specific task

7. Distributed System

7.1. Loosely Coupled System

7.1.1. Advantage

7.1.1.1. Resources sharing

7.1.1.2. Computation speed up

7.1.1.3. Reliability

7.1.1.4. Communication requires networking