Chapter no 1
Introduction to Computer
🧠 What is a Computer?
A computer is an electronic machine that takes input, processes it, and gives the desired output. It works very fast and can store a large amount of information.
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🔁 Basic Function of a Computer
A computer performs 4 main functions:
1. Input – Taking data (e.g., through keyboard, mouse)
2. Processing – Working on the data (CPU does this)
3. Storage – Saving data (in hard disk, pen drive)
4. Output – Giving results (on monitor, printer)
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🧩 Main Parts of a Computer
1. Monitor – Displays output
2. CPU (Central Processing Unit) – Brain of the computer
3. Keyboard – Used to type text and numbers
4. Mouse – Helps to point and click
5. Printer – Prints documents
6. Speakers – Output sound
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🧰 Types of Computers
1. Desktop – Used in offices, homes
2. Laptop – Portable computer
3. Tablet – Touchscreen device
4. Smartphone – Mini computer in your hand
5. Server – Powerful system used in networks
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🌐 Uses of Computers
Education – Online learning, digital classes
Business – Billing, data management, emails
Banking – ATMs, online banking
Healthcare – Patient records, reports
Entertainment – Movies, games, music
Government – Online services, ID cards
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⚙️ Basic Software Examples
Operating System – Windows, Linux, Android
MS Office – Word, Excel, PowerPoint
Browsers – Google Chrome, Firefox
Apps – Zoom, WhatsApp Web, YouTube
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🔐 Computer Safety Tips
Use antivirus software
Don’t share passwords
Don’t open unknown links
Take regular backups
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✅ Conclusion
A computer is a sma
rt machine that helps in every field of life. Knowing how to use a computer is a must-have skill in today's digital world.
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