Chapter – 4 : Operating System and it’s Types

An Operating System (OS) is the main software that manages all the hardware and other software on a computer. It’s like the boss of your device—it tells the computer how to work and lets you interact with it easily.

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🔧 Key Functions of an Operating System:

1. User Interface
   • Lets you interact with the computer (like clicking icons, opening apps).
   • Example: Windows desktop or macOS interface.
2. Resource Management
   • Controls CPU, memory, storage, and input/output devices.
3. File Management
   • Organizes files on storage devices (saving, opening, deleting).
4. Process Management
   • Runs multiple programs and keeps them from interfering with each other.
5. Security & Access Control
   • Protects your data with passwords, permissions, and encryption.

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💻 Examples of Operating Systems:

• Windows
• macOS
• Linux
• Android (for mobile)
• iOS (for iPhones and iPads)

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🧠 Simple Analogy:

Think of the OS as the manager of a hotel—it handles everything so guests (apps and users) can have a smooth experience.

Want a visual or a comparison between different OS types?