In this article we providing information regarding latest Navodaya Class 7 Computer Subject July Month Notes 2026.
Navodaya Class 7 Computer Subject July Month Notes 2026
July – 2026 : NVS Class 7 Computer Science Syllabus
- Introduction to Networks (Part 2):
- a) Web Browsers
- b) Search engines.
- c) World Wide Web.
- d) Saving information from the internet
- Computer Security:
- a) Threats to the Computer
- b) Virus and its Types
- c) Antivirus
- d) Software and Types of Software
- e) Firewall and its use
- f) Cyber Crime
- g) Backup and Restore
- h) Cyber Law and its importance
Chapter: Introduction to Networks (Part 2) & Computer Security
Easy Notes for Students
1. Web Browsers
A Web Browser is a software used to open and view websites on the Internet.
Examples:
- Google Chrome
- Mozilla Firefox
- Microsoft Edge
- Safari
Uses:
✔ Open websites
✔ Search information
✔ Watch videos
✔ Read news and articles
Remember: Browser is the “door” to access the Internet.
2. Search Engines
A Search Engine helps us find information on the Internet.
Examples:
- Bing
- Yahoo
- DuckDuckGo
How it works?
- Open a browser.
- Type keywords in the search box.
- Press Enter.
- Search engine shows related results.
Example: Search “Solar System” to get information about planets.
3. World Wide Web (WWW)
The World Wide Web (WWW) is a collection of millions of web pages connected through the Internet.
Features:
- Contains text, images, videos, and audio.
- Accessible through web browsers.
- Uses website addresses called URLs.
Example:
Remember: Internet is the network, while WWW is the information available on that network.
4. Saving Information from the Internet
Information from websites can be saved for future use.
Ways to Save:
- Save a web page.
- Download images.
- Download PDF files.
- Copy and paste text (with permission).
Steps:
- Right-click on the content.
- Choose Save As or Download.
- Select a folder.
- Click Save.
Important: Always use information legally and responsibly.
5. Threats to the Computer
Anything that can damage a computer is called a Threat.
Common Threats:
- Viruses
- Hackers
- Malware
- Phishing emails
- Unsafe websites
Effects:
❌ Data loss
❌ Slow computer
❌ System crashes
❌ Information theft
6. Virus and Its Types
A Computer Virus is a harmful program that can damage files and software.
Types of Viruses:
a) Boot Sector Virus
Attacks the computer during startup.
b) File Virus
Infects files and programs.
c) Macro Virus
Infects documents like Word files.
d) Worm
Spreads automatically from one computer to another.
Symptoms:
- Slow performance
- Frequent errors
- Missing files
7. Antivirus
An Antivirus is software that detects and removes viruses.
Functions:
✔ Scans files
✔ Detects threats
✔ Removes viruses
✔ Protects the computer
Examples:
- Quick Heal
- Norton
- Avast
- McAfee
Remember: Keep antivirus updated regularly.
8. Software and Types of Software
Software is a set of instructions that tells a computer what to do.
Types of Software
A. System Software
Controls the working of the computer.
Examples:
- Windows
- Linux
- Android
B. Application Software
Helps users perform specific tasks.
Examples:
- MS Word
- Paint
- Calculator
Remember: Hardware = Physical parts, Software = Programs.
9. Firewall and Its Use
A Firewall is a security system that protects a computer from unauthorized access.
Uses:
✔ Blocks harmful traffic
✔ Protects personal data
✔ Prevents hacking attempts
Remember: Firewall acts like a security guard for your computer.
10. Cyber Crime
Illegal activities done using computers or the Internet are called Cyber Crimes.
Examples:
- Hacking
- Identity theft
- Online fraud
- Cyberbullying
- Spreading viruses
Prevention:
✔ Use strong passwords
✔ Avoid sharing personal information
✔ Use trusted websites
11. Backup and Restore
Backup
Creating a copy of important data.
Restore
Getting back saved data when original data is lost.
Importance:
✔ Protects data from loss
✔ Helps recover files after a virus attack
✔ Useful when a computer crashes
Backup Devices:
- Pen Drive
- External Hard Disk
- Cloud Storage
12. Cyber Law and Its Importance
Cyber Law is a set of rules for safe and legal use of computers and the Internet.
Importance:
✔ Prevents cyber crimes
✔ Protects online users
✔ Ensures privacy and security
✔ Punishes online offenders
Examples:
- Do not hack accounts.
- Do not share private information without permission.
- Respect copyright rules.
Quick Revision
| Topic | Key Point |
|---|---|
| Web Browser | Software to open websites |
| Search Engine | Finds information online |
| WWW | Collection of web pages |
| Virus | Harmful computer program |
| Antivirus | Removes viruses |
| Software | Programs that run a computer |
| Firewall | Protects against unauthorized access |
| Cyber Crime | Illegal activity using computers |
| Backup | Copy of important data |
| Restore | Recover saved data |
| Cyber Law | Rules for safe Internet use |
One-Line Summary
Use the Internet safely, protect your computer with antivirus and firewall, keep backups of important files, and follow cyber laws to become a responsible digital citizen.
