INTRODUCTION TO OPERATING SYSTEMS AND ARCHITECTURES

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What is Abstraction?
Provides a common interface to users and programmers. Encapsulates and hide inner mechanisms inside a black box, with only the abstract programming interface accessible.
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What is Isolation?
The different (physical or logical) components of a system are handled separately and independently. They cannot usually “pollute” each other. Virtual memory
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Encapsulation
 Object Oriented programming concept to handle a “part/package” of the system.  Hides data.  Objects are accessed through public functions.  Inner mechanisms hidden.
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What are the Recent developments to OS?
 Microkernel architecture.  Multi-processing.  Object-Oriented Operating systems.  Distributed OS.  Lightweight OS (mobile platforms).
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a
b
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Card 2

Front

What is Isolation?

Back

The different (physical or logical) components of a system are handled separately and independently. They cannot usually “pollute” each other. Virtual memory

Card 3

Front

Encapsulation

Back

Preview of the front of card 3

Card 4

Front

What are the Recent developments to OS?

Back

Preview of the front of card 4

Card 5

Front

a

Back

Preview of the front of card 5

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