NIOS Class 12 Computer Science 330 Solved Practical File (Lab Manual)
The Computer Science practical test is one of the most challenging parts of Class 12 for many NIOS students. Writing code, preparing the lab file correctly, and understanding database concepts can feel overwhelming--especially when you're studying through open schooling without a teacher's direct guidance. NIOS Computer Science 330 Solved Practical File (Lab Manual), by Unnati Education, is the perfect solution.
This file has been designed according to the NIOS October 2025 syllabus. It will help you complete every practical with confidence. This lab manual is perfect for anyone learning C/C++, creating web pages with HTML, managing data using SQL, or understanding the operations of spreadsheets. It includes step-by-step examples, clear code, diagrams, and viva-questions in the correct format.
Inside the NIOS Class 12 Computer Science 330 Lab Manual
| S. No. | Practicals |
|---|---|
| 1 | Practical 1: Basic C Program - Hello World and Variables |
| 2 | Practical 2: Input/Output and Data Types in C |
| 3 | Practical 3: Conditional Statements (if-else) |
| 4 | Practical 4: Loops (for, while) |
| 5 | Practical 5: Arrays and Strings |
| 6 | Practical 6: Functions in C |
| 7 | Practical 7: Pointers and Structures |
| 8 | Practical 8: File Handling in C |
| 9 | Practical 9: Basic HTML Page Creation |
| 10 | Practical 10: HTML Forms and Tables |
| 11 | Practical 11: CSS Styling for Web Pages |
| 12 | Practical 12: SQL Database Creation |
| 13 | Practical 13: SQL Queries (SELECT, INSERT) |
| 14 | Practical 14: SQL Joins and Aggregates |
| 15 | Practical 15: Spreadsheet Basics (Excel/Calc) |
| 16 | Practical 16: Formulas and Functions in Spreadsheets |
| 17 | Practical 17: Charts and Data Analysis in Spreadsheets |
| 18 | Practical 18: Advanced C Programs (Recursion) |
| 19 | Practical 19: HTML with JavaScript Basics |
| 20 | Practical 20: SQL Stored Procedures |
| 21 | Practical 21: Spreadsheet Macros |
| 22 | Practical 22: Database Normalization |
| 23 | Practical 23: Web Page with CSS Grid |
| 24 | Practical 24: C++ Object-Oriented Concepts |
| 25 | Practical 25: SQL Triggers and Views |
| 26 | Practical 26: Advanced Spreadsheet Pivot Tables |
| 27 | Practical 27: HTML Responsive Design |
| 28 | Practical 28: C File I/O Advanced |
| 29 | Practical 29: SQL Backup and Restore |
| 30 | Practical 30: Spreadsheet Data Validation |
| 31 | Practical 31: Full Web Project with HTML/CSS |
| 32 | Practical 32: C++ Inheritance Example |
| 33 | Practical 33: SQL Advanced Queries |
| 34 | Practical 34: Spreadsheet Integration with Databases |
| 35 | Practical 35: JavaScript in HTML |
| 36 | Practical 36: C++ Polymorphism |
| 37 | Practical 37: SQL Security Practices |
| 38 | Practical 38: Advanced Spreadsheet Automation |
Download Solved Practical File
Why the NIOS Computer Science 330 330 solved practical file is essential
The practical exam for NIOS Computer Science carries 60% marks, so it has a direct impact on your final score. Students struggle to code, not because they cannot code, but because they do not know how to present the material in the right way. The NIOS Computer Science Practical File removes all confusion.
You can:
- Each program must have the correct syntax and code indentation.
- Ensure that all outputs are properly labelled with screenshots and flowcharts.
- Simple explanations in a language that is easy to understand for students.
- All NIOS centers accept clean formatting.
- Both Hindi and English medium availability.
This solved lab manual will save you time. Follow, learn, and submit an exam-ready file.
The Latest 2025 Computer Science Lab Manual
The NIOS Computer Science 330 Solved practical file (Lab manual) is the latest version and covers all of the required tasks in your syllabus. Each exercise includes code, logic, and output demonstration.
1. C/C++ Programming Practices
You will learn the basics of programming, from variables to loops and arrays to strings and functions. Each task is described step-by-step, with code comments and examples.
- Write programs using control structures.
- Perform mathematical operations by using arrays and functions.
- String manipulation tasks: concatenation (* wildcard), reversal, and reversal.
- File handling programs (creating, reading, writing files).
- Implementation of the union structure in C.
2. Database Management Practices (MySQL/Access)
Databases are an integral part of the curriculum. The manual explains that:
- Create tables with SQL commands
- Inserting, updating, and deleting records.
- Use SELECT, ORDER BY, and WHERE clauses to write queries.
Includes the correct command sequences and output snapshots.
3. HTML and Web Design
HTML tags are also required for students to create web pages. This section includes:
- Basic HTML structure (headings and lists, tables, hyperlinks, forms, etc.)
- Use CSS for page styling and layout.
- Examples include "Student registration form" and "NIOS info page."
4. Spreadsheets and Data Analysis
Use spreadsheets to their fullest potential:
- Create data tables, functions, and formulas.
- Data presentation using charts and graphs.
- Excel and Calc are both capable of performing statistical calculations.
5. Logic Building and Flowcharts
It helps you answer viva questions confidently because you understand why each step exists. You can answer viva questions with confidence because you understand the purpose of every step.
The Solved Practical File
- Savings in Time and Effort
It can take days to create a practical file. This ready-to-use NIOS Class 12 Computer Science Practical File provides you with every answer formatted. Instead of spending hours writing, you can spend time revising. - Exam Confidence Increased
The program will include a logical reasoning section and the expected viva responses. You will perform better in evaluations when you know the "why". - Follows the Latest NIOS October 2025 Syllabus
Each topic has been fully updated to reflect the current session. The manual adheres strictly to the latest board guidelines for presentation and structure. - Presenting Better Presentation
Format follows official NIOS pattern – cover page, index, and certificate. Pages are neatly organized for each program. Teachers appreciate neatly organized submissions. - All Students Can Benefit
This manual is for everyone, whether you are a student or a professional in the workplace, or if you have been away from programming for a while. The step-by-step instruction makes it easy to write code, even if you have never done so before.
Why are practicals so important in NIOS Computer Science
Students often focus on the theory only and leave practicals to the last minute. This is a big mistake. Practical marks are important in the NIOS NIOS Computer Science 330 class. The perfect file can boost your overall percentage and help you achieve a distinction.
The board will evaluate your ability to apply concepts to real-world tasks, such as writing code, analyzing information, and creating programs. This file is a bridge that connects concept to execution. It will make you both exam-ready as well as career-ready.
Why students trust Unnati Education
For over a decade, Unnati Education has guided thousands of NIOS or IGNOU students across the country. Our practical files represent more than just printed materials. They are a combination of accuracy, reliability, and experience.
What you get with our files:
- Ready to submit NIOS format. Includes cover, index, and certificate.
- Available in Hindi and English media.
- Instant digital delivery via WhatsApp or email
- Both printed and handwritten options are available.
- Orders urgently placed can be delivered the same day at a low price.
- WhatsApp Support for all questions regarding practicals and TMAs.
All NIOS authorized study centres in India, as well as abroad, accept our NIOS files after they are checked by faculty members.
Who can use this solved practical file?
This practical solution file is perfect for:
- Students from NIOS streams 1 to 4.
- Students who have missed their practicals at school or urgently need help with submissions.
- Students who have to retake or take a supplementary exam.
- Open schooling is a great way for working professionals to complete their education.
- Students from the UAE, Nepal, Saudi Arabia, etc., study abroad under NIOS.).
Each version is tailored to the NIOS requirements. This ensures that your file is submitted without any corrections.
Features and Benefits of the NIOS Computer Science Lab Guide
- Coding Solutions Step-by-Step
The program contains clear syntax, correct indentation, and explanations for each statement. Even beginners will be able to understand the logic. - Algorithm Support and Flowchart Support
Before each program, students are given a list of algorithms to develop their problem-solving abilities. Flowcharts provide visual clarity. - Examples of output and screenshots
Each code section includes the expected output, so you can know what to type and paste into your file. - Questions and Answers - Viva
Many students do not prepare for the viva. Our manual includes typical oral questions like: - What is the main difference between an interpreter and a compiler?
- What is the purpose of loops in C?
- The answers are written in a simple and concise way so that you can easily memorize them.
- Examiner's Remarks and Signature Section
The file submission process is made easier by the layout of each page, which includes space for teacher comments and signatures. - Print and Digital Availability
Order the file in digital PDF format for immediate use, or have a copy sent to you by courier for official submission.
Importance of Practical Skills and Development
Understanding how technology works is more important than passing an exam. This manual helps students:
- Programming logic to solve problems.
- Data management allows for analytical thinking.
- Create your own website and show off your creativity.
- Apps are developed in real-world environments.
These skills will be useful for future careers in software development, IT support, and data analysis.
How to order your NIOS Computer Science Practical File
WhatsApp: +91 9999 436384
Mention details: Your subject (330), language (Hindi/English), and delivery type (PDF or Printed).
Confirm Payment: via UPI / Paytm / Bank Transfer.
Instantly receive your file: All digital files are delivered instantly, and printed copies will be sent within 24 hours.
The same number can be used to contact our team for assistance with assignments, TMAs, and exam queries.
Tips for NIOS Computer Science Practicals
- Before writing a program, always read the theory that goes with it.
- Understanding the logic is better than memorizing it.
- Label diagrams, flowcharts, and other diagrams.
- Practice speaking out loud your answers before the viva.
- Before submitting your file, make sure it is neatly stapled.
You can score more than 90 marks if you present your ideas clearly and consistently.
Why Unnati Education is your most trusted partner
Experience in academic support for NIOS/IGNOU of 10+ years.
Verified content developed by subject experts, teachers, and other educators.
For urgent needs, we offer a fast response and immediate delivery.
Students from India and abroad can receive support.
A reputation built on results, not promises.
We don't simply sell them files; we help them understand the concepts within.
Final Words
The NIOS Computer Science 330 Solved Practical File (Lab Manual) is more than just a requirement for submission--it is a learning tool that builds academic and technical skills. You'll gain clarity and save time by using the October 2025 version.
Each year, thousands of students rely on Unnati Education to simplify the NIOS process -- from application to exam success. You can submit your practical file with confidence and focus on your score.
For instant help or order, message us now on WhatsApp 9899 436384 or email info@unnatieducation.in.
Frequently Asked Questions (FAQs).
Q1. What does the NIOS Class 12 Computer Science 330 Solved Practical File include?
The NIOS Class 12 Computer Science 330 Solved Practical File includes step-by-step C/C++ programs, SQL queries, and HTML design tasks. It also contains Viva questions, answers, and spreadsheet work.
Q2. Is the lab manual updated for the October 2025 exams?
The lab manual has been updated to reflect the October 2025 exam. Each program and format has been updated according to the NIOS curriculum 2025.
Q3. Can I get the NIOS Computer Science Practical File Class 12 in Hindi medium?
Yes, you can get it in Hindi. You can choose between the Hindi and English versions to match your exam language.
Q4. Do you provide handwritten and typed options?
You can select between neatly handwritten scans and printed PDFs depending on the requirements of your study centre.
Q6. Is this helpful for Viva or the exam?
This will help me perform better in my viva or exam. This file contains practice questions with logical explanations to help you answer confidently before the examiner.