ICT Class 9 - Communication Technology Notes

Communication Technology

Welcome to the chapter on Communication Technology for Class 9. In this chapter, you will learn about the evolution of communication, different types of communication technologies, their uses, and their impact on society. By the end of this chapter, you will understand how technology has changed the way we communicate and the importance of safe and responsible use.

Introduction

Communication is the process of sharing information, ideas, or feelings with others. Technology has made communication faster, easier, and more effective. Today, we use many devices and tools to communicate with people around the world.

Types of Communication

• Verbal Communication: Using spoken or written words (e.g., phone calls, emails).
• Non-verbal Communication: Using gestures, facial expressions, or body language.
• Visual Communication: Using images, videos, or symbols (e.g., infographics, emojis).

Evolution of Communication Technology

• Early methods: Letters, messengers, smoke signals, and pigeons.
• Invention of the telephone and telegraph.
• Radio and television for mass communication.
• Mobile phones and the internet for instant global communication.
• Modern tools: Social media, video calls, instant messaging apps.

Modern Communication Technologies

• Mobile Phones: Used for calls, messages, internet, and apps.
• Internet: Connects people worldwide through emails, websites, and social media.
• Social Media: Platforms like WhatsApp, Facebook, Instagram, and Twitter for sharing and networking.
• Video Conferencing: Tools like Zoom, Google Meet, and Microsoft Teams for virtual meetings.
• Satellite Communication: Used for TV, GPS, and global connectivity.

Advantages of Communication Technology

• Faster and easier communication.
• Connects people globally.
• Access to information and learning resources.
• Supports business, education, and healthcare.

Challenges and Safety

• Cyberbullying and online scams.
• Privacy and data security issues.
• Digital divide: Not everyone has equal access to technology.
• Overuse can affect health and relationships.

Responsible Use of Communication Technology

• Protect your personal information online.
• Be respectful and kind in digital communication.
• Do not share false information or rumors.
• Balance screen time with other activities.

Fun Activity: Communication Timeline

Make a timeline showing how communication has changed from letters and telegraphs to smartphones and social media.

Summary

• Communication technology has changed the way we connect and share information.
• Modern tools make communication fast and easy, but we must use them safely and responsibly.

Practice Questions

1. Name two modern communication technologies.
2. What are the advantages of using the internet for communication?
3. List one challenge of communication technology.
4. Why is it important to use communication technology responsibly?
5. What is video conferencing?

Challenge Yourself

• Interview your grandparents about how they communicated when they were young. Compare it with how you communicate today.
• Make a poster about internet safety rules.

Did You Know?

• The first email was sent in 1971!
• There are more mobile phones in the world than people!

Glossary

• Communication: Sharing information with others.
• Technology: Tools and machines that help us do things better and faster.
• Internet: A global network that connects computers and people.
• Video Conferencing: Talking to people using video and audio over the internet.

Answers to Practice Questions

1. Mobile phones, social media (any two: internet, video conferencing, satellite communication, etc.).
2. It is fast, connects people worldwide, and gives access to lots of information.
3. Cyberbullying, privacy issues, or digital divide (any one).
4. To stay safe, protect privacy, and be respectful online.
5. A way to talk to people using video and audio over the internet.

---

Use communication technology wisely to connect, learn, and grow!