What is an Operating System (OS)?
An Operating System is the main software that runs on a computer, laptop, tablet, or smartphone. It manages the hardware and lets you use programs (apps).
Key Functions of an OS:
- User Interface (UI)
Lets you interact with the computer using menus, icons, or commands (like Windows desktop or phone screen). - File Management
Helps you save, open, delete, and organize files. - Memory Management
Controls how the computer uses RAM (temporary memory) so apps run smoothly. - Process Management
Runs and manages multiple programs at the same time. - Hardware Control
Connects to and controls devices like keyboard, mouse, printer, and screen. - Security
Keeps your system and data safe from viruses and hackers using passwords and updates.
Examples of Operating Systems:
- Windows – Common on most PCs and laptops.
- macOS – Runs on Apple Mac computers.
- Linux – Often used by IT professionals and servers.
- Android – Runs on most smartphones and tablets.
- iOS – Apple’s system for iPhones and iPads.
Why is an OS important?
Without an operating system, your device would not work and you wouldn’t be able to click, type, or run any apps.
