Peripheral Devices – Complete Notes with Examples & MCQs | Computergs | UP Police SI

🖥️ Peripheral Devices (Computer)

📖 Introduction

Peripheral Devices are external devices connected to a computer system that help in input, output, and storage operations.

They are not part of the core computer (CPU & memory) but are essential for communication between user and computer.

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🔌 Types of Peripheral Devices

Peripheral devices are mainly divided into three categories:

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⌨️ 1. Input Devices

Devices used to enter data and instructions into the computer.

Examples:

• Keyboard

• Mouse

• Scanner

• Microphone

• Webcam

Key Points:

• Converts user input into digital form

• Essential for data entry

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🖨️ 2. Output Devices

Devices used to display or produce results from the computer.

Examples:

• Monitor

• Printer

• Speaker

• Projector

Key Points:

• Converts processed data into human-readable form

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💾 3. Storage Devices

Devices used to store data permanently or temporarily.

Examples:

• Hard Disk

• SSD

• Pen Drive

• CD/DVD

Key Points:

• Stores large amount of data

• Used for backup and transfer

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🔄 Input vs Output Devices

Input Devices	Output Devices
Accept data	Display results
Example: Keyboard	Example: Monitor
User → Computer	Computer → User

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⚙️ Other Peripheral Devices

🔹 Communication Devices

• Modem

• Network Card

🔹 Hybrid Devices

Devices that can perform both input and output:

• Touchscreen

• Multifunction Printer

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🎯 Important Points for Exams

• Peripheral devices are external devices

• Input devices send data to computer

• Output devices show results

• Storage devices store data

• Touchscreen = Hybrid device

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❓ MCQs (Practice Questions)

Q1. Peripheral devices क्या होते हैं?

A. Internal devices
B. External devices connected to computer ✅
C. Only CPU
D. Only software

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Q2. Keyboard किस प्रकार का device है?

A. Output
B. Input ✅
C. Storage
D. Hybrid

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Q3. Printer का उपयोग किसलिए होता है?

A. Input देना
B. Output प्राप्त करना ✅
C. Data store करना
D. Processing

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Q4. Hard Disk किस प्रकार का device है?

A. Input
B. Output
C. Storage ✅
D. Hybrid

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Q5. Touchscreen किस प्रकार का device है?

A. Input
B. Output
C. Storage
D. Hybrid ✅

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Q6. इनमें से कौन सा input device है?

A. Monitor
B. Speaker
C. Scanner ✅
D. Printer

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Q7. Speaker का कार्य क्या है?

A. Input देना
B. Output देना ✅
C. Store करना
D. Process करना

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Q8. Pen Drive किस प्रकार का device है?

A. Input
B. Output
C. Storage ✅
D. Processing

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Q9. Modem किस प्रकार का device है?

A. Storage
B. Communication ✅
C. Input
D. Output

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Q10. Webcam का उपयोग किसलिए होता है?

A. Output
B. Input (video capture) ✅
C. Storage
D. Printing

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📌 Conclusion

Peripheral Devices play a vital role in making a computer system interactive and functional. Understanding their types and uses is very important for competitive exams.

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