Computer Science 330 Syllabus for NIOS Senior Secondary with Lesson Split and Unit Marks
All 29 lessons, the 11 and 18 lesson division, unit wise marks and the official question paper design in one place.
Written by Prateek Talwar | Reviewed by Jyoti Sharma, Senior NIOS Counsellor | Last updated: July 2026
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NIOS Computer Science Syllabus Class 12 Complete Guide for 2026
Computer Science carries subject code 330 at NIOS senior secondary level. The course has 29 lessons arranged in 5 modules. Eleven of those lessons are set aside for your Tutor Marked Assignment and the remaining eighteen are tested in the written board paper.
There is one thing about this subject that catches students out every single year. The theory paper is worth 60 marks, not 100, and those 60 marks are shared between only four of the five modules. Module 5 does not appear in the theory paper at all.
That single fact should reshape how you plan your year. So should the size of the C++ section, which alone carries 24 of the 60 theory marks.
This page gives you the official bifurcation exactly as NIOS publishes it, the official question paper design, a short note on what every one of the 29 lessons actually covers, and a study plan built around where the marks really are.
If you are still choosing papers for the session, the full NIOS Class 12 syllabus page shows how Computer Science fits alongside your other subjects.
Computer Science 330 Syllabus at a Glance
Two numbers in that table decide your whole plan. Eighteen lessons are tested in the written paper, and C++ alone accounts for 24 of the 60 marks available. Everything else follows from those two facts.
Official Bifurcation of Computer Science 330 from NIOS
The table below is reproduced word for word from the official NIOS bifurcation document for Computer Science 330. It is the deciding authority on which lesson belongs to your assignment and which lesson belongs to the written paper.
| Total no. of Lessons= 29 | ||
|---|---|---|
| MODULE (No. & name) |
TMA (40%) (No. of lessons 11 ) |
Public Examination (60%) (No. of lessons 18) |
| 1. Basic Computing |
L 1- Computer Fundamentals L 3- Computer Software L 7- Emailing |
L 2- Binary Logic L4- Operating System L 5- Data Communication and Networking L 6- Communications on Internet |
| 2. Office Automation | L 11- Open Source Resources |
L 8- Digital Documentation L 9 – Spreadsheets L 10- Digital Presentation |
| 3. Programming in C++ |
L 12- Introduction to C++ L 13- Basic Concepts of OOP |
L 14- Control Statements L 15- Functions L 16- Array L 17- Structure, Typedef & Enumerated Data Type L 18- Classes & Objects with Constructors/Destructors L 19- Inheritance – Extending Classes L 20- Pointer L 21- Files |
| 4. Database Concepts, Web Designing |
L 22- Fundamentals of Data Structure L 26- New Trends in Computing |
L 23- Database Management System L 24- Web Designing using HTML L 25- Inserting images & Lists in a Web page |
| 5. Professional Skills |
L 27- Project Management Skills L 28- Entrepreneurship Skills L 29- Professional Communication Skills |
|
Look at the last row carefully. Module 5 has nothing in the public examination column. All three of its lessons are assignment work, which is why you will never meet them in the theory paper.
Module 3 works the other way round. Only two of its ten lessons go to the assignment, so eight C++ lessons land squarely in your written exam.
Official Question Paper Design for Computer Science 330
These four tables come straight from the official NIOS question paper design for Computer Science 330. They show how the 60 theory marks are shared across thinking skills, question formats, content areas and difficulty levels.
Subject: Computer Science Class: Senior Secondary
Marks: 60 Duration: 3 hours
1. Weightage by Objectives
| Objectives | Marks | % of the total Marks |
|---|---|---|
| Knowledge | 12 | 20 |
| Understanding | 18 | 30 |
| Application | 30 | 50 |
| Total | 60 | 100 |
2. Weightage to Types of Questions
| Types of Questions | No. of Question | Marks |
|---|---|---|
| Objective Type 1 (1 marks) (MCQ) |
12 | 12 |
| Objective Type 2 (2 marks) | 3 | 6 |
| Objective Type 2 (1 marks) | 12 | 12 |
| (fill in the blanks, match the column, paragraph or case-based Questions, one-word questions, true False, etc.) | ||
| Very Short Answer (VSA) - 2 | 8# | 16 |
| Short Answer (SA) - 3 | 2## | 6 |
| Long Answer (LA) - 4 | 2### | 8 |
| Total | 39 | 60 |
Note:
# - 4 questions will have internal choices.
## - 1 questions will have internal choices.
### - 2 questions will have internal choices.
3. Weightage to Content Areas
| Unit/Sub Unit | Marks |
|---|---|
| 1 Basic Computing | 7 |
| 2. Office Automation | 8 |
| 3. Programming in C++ | 24 |
| 4. Database Concepts, Web Designing | 21 |
| Total | 60 |
4. Difficulty level of Question Paper
| Level | Marks | % of marks given |
|---|---|---|
| Difficult | 12 | 20 |
| Average | 30 | 50 |
| Easy | 18 | 30 |
| Total | 60 | 100 |
What the Computer Science 330 Paper Design Actually Tells You
Application carries 30 of the 60 marks, a full half of the paper. Knowledge carries only 12. In practice that means writing and reading code, working out outputs and solving problems, rather than reciting definitions.
The objective portion is enormous. Twenty seven of the 39 questions are objective type, and together they are worth 30 marks. Half the paper is decided before you write a single long answer, which rewards daily revision far more than a last week rush.
Long answers are worth only 8 marks from 2 questions, and both carry an internal choice. Short answers add 6 more. So the descriptive writing portion is just 14 marks out of 60. Do not let it eat your revision time.
Eighty per cent of the paper is set at average or easy level. A student who covers all eighteen board lessons properly and practises past papers is chasing a comfortable score rather than a lucky one.
The NIOS Class 12 question paper archive shows these percentages turning into real questions session after session.
Where the 60 Theory Marks Sit in Computer Science 330
This is the most useful piece of arithmetic on the page. Divide each unit's marks by the number of its lessons that appear in the written paper, and you can see exactly which lessons pay best for the time you spend on them.
Database Concepts and Web Designing is the standout. Just three lessons carry 21 marks, which is roughly seven marks per lesson. No other unit comes close to that return, and yet it is the unit students most often leave for the end.
Basic Computing is the opposite. Four board lessons share only 7 marks. It still needs covering because those marks are easy ones, but it does not deserve weeks of attention.
C++ and Database plus Web Designing together carry 45 of the 60 marks. That is 75 per cent of your theory paper sitting in eleven lessons. If your revision time is short, those eleven lessons are the answer.
Module 5 gives you nothing in the theory paper, so treat those three lessons purely as assignment and viva preparation rather than exam study.
Board Exam Lessons in Computer Science 330 and What They Cover
These eighteen lessons carry 60 per cent weightage and decide your written paper. Keep this table open while you revise, because it tells you what each lesson actually asks of you.
Eight of these eighteen lessons are C++ lessons. That is why Programming in C++ is worth 24 marks while Basic Computing, which has more lessons overall, is worth only 7.
Notice how many of these lessons ask you to read code rather than write about it. Output based questions on loops, arrays, pointers and HTML appear constantly, and they are pure practice marks.
If you want to see this in book form, our guide to the NIOS Computer Science book for Class 12 walks through the same lessons chapter by chapter.
TMA Lessons in Computer Science 330 and What They Cover
These eleven lessons carry 40 per cent weightage and are assessed through your Tutor Marked Assignment. You write these answers at home with the book open, so there is no good reason to score poorly here.
Two of these lessons deserve more respect than they usually get. L 12 and L 13 are the foundation of every C++ question in the written paper, even though they sit in the assignment column.
Skip them and you will struggle with L 14 onwards, so read them properly rather than only copying assignment answers out of them.
All 29 Lessons in the Class 12 Computer Science Course
Here is the complete lesson list in order, grouped by module. Print it or screenshot it and tick lessons off as you finish them.
Module 1: Basic Computing, 7 Lessons
L 1 Computer Fundamentals. L 2 Binary Logic. L 3 Computer Software. L 4 Operating System. L 5 Data Communication and Networking. L 6 Communications on Internet. L 7 Emailing.
Module 2: Office Automation, 4 Lessons
L 8 Digital Documentation. L 9 Spreadsheets. L 10 Digital Presentation. L 11 Open Source Resources.
Module 3: Programming in C++, 10 Lessons
L 12 Introduction to C++. L 13 Basic Concepts of OOP. L 14 Control Statements. L 15 Functions. L 16 Array. L 17 Structure, Typedef and Enumerated Data Type. L 18 Classes and Objects with Constructors and Destructors. L 19 Inheritance and Extending Classes. L 20 Pointer. L 21 Files.
Module 4: Database Concepts and Web Designing, 5 Lessons
L 22 Fundamentals of Data Structure. L 23 Database Management System. L 24 Web Designing using HTML. L 25 Inserting images and Lists in a Web page. L 26 New Trends in Computing.
Module 5: Professional Skills, 3 Lessons
L 27 Project Management Skills. L 28 Entrepreneurship Skills. L 29 Professional Communication Skills.
Practical Work and Internal Assessment in Computer Science 330
Computer Science 330 is one of the NIOS subjects with a practical component alongside the theory paper. The practical is compulsory and is conducted at your accredited institute or study centre, not at a public examination centre.
The official question paper design reproduced above covers the 60 mark theory paper only. Your practical is assessed separately and its marks are added to your final result for the subject.
Marks allocated to the practical have been reported differently by different sources over the years, so confirm the current split for your session with your study centre or on the NIOS website before you plan around a number.
What does not change is the value of the practical. It is assessed in a controlled setting on work you have prepared in advance, which makes it the most predictable marks in the whole subject. Students who take the practical file seriously usually finish a grade above students who treat it as a formality.
Your practical work draws on the same lessons as your theory. Spreadsheets, presentations, HTML pages, SQL queries and C++ programs all appear, so preparing the file doubles as revision.
High Scoring Topics in Class 12 Computer Science 330
C++ output questions. Loops, arrays, functions and pointers are regularly set as short code fragments where you predict the output. There is no partial understanding here. Either you traced it correctly or you did not, so practise tracing on paper.
SQL queries. Writing a query for a described situation, and reading a query to explain what it returns, are among the most reliably repeated questions in this paper. Master select, where, order by and the basic aggregate functions.
HTML tags and attributes. Identifying the output of given HTML, and writing the tags for a described page element, are quick marks. Lessons 24 and 25 together sit inside a 21 mark unit.
Binary conversion and logic gates. Number system conversion follows a fixed procedure with a single right answer. Ten minutes of daily practice makes these questions automatic.
Classes, constructors and inheritance. Definitions plus a short code example. Prepare one clean example of each type of inheritance and you can answer most variations of the question.
Data structures. Stack and queue operations, and the difference between an array and a linked list, come up often even though L 22 sits in the assignment column.
Networking basics. Topologies, transmission media and the LAN, MAN and WAN comparison are short factual answers worth easy marks inside a small unit.
NIOS Computer Science Syllabus Class 12 Study Plan That Works
Start with Module 4. It sounds odd, but three lessons carrying 21 marks is the best return available and most students never realise it. Two weeks on databases and HTML changes your score more than a month on Basic Computing.
Then give C++ the longest single block of your year. Read L 12 and L 13 first even though they are assignment lessons, because nothing after them makes sense otherwise. Work forward lesson by lesson without skipping.
Write code by hand, not only on a computer. The exam asks you to produce and trace code on paper, and handwriting a program is a different skill from typing one with an editor helping you.
Build an output practice habit. Take any short program from the book, cover the answer, and work out what it prints. Fifteen minutes daily on this beats hours of rereading theory, because half the paper is objective and application based.
Do not over invest in long answers. They are worth 8 marks from 2 questions with internal choice in both. Prepare them properly, then move on.
In the final month, work only from past papers under a three hour clock, and prepare your practical file alongside so the two reinforce each other.
Solving the NIOS Class 12 previous year question papers under timed conditions is the fastest way to find the gaps you cannot see from reading.
How the Computer Science 330 TMA Works
Your Tutor Marked Assignment draws on the eleven lessons in the blue column of the official bifurcation. It is compulsory, and you submit it to your study centre within the window NIOS announces for your session.
Computer Science assignments usually mix short theory answers with small programs and definitions. Where a question asks for code, write the full program with proper indentation and add a comment line explaining what it does.
Answers drawn from Module 5 are the easiest marks in the assignment. Project management, entrepreneurship and communication questions are descriptive and need no coding, so do not rush them just because they feel less technical.
Number your answers exactly as the question paper does, keep code neatly aligned, and do not leave sub parts unanswered. These small habits protect marks students throw away for no reason at all.
If you want model answers to work from, our NIOS solved assignment sets cover all eleven Computer Science 330 assignment lessons in typed and handwritten formats.
What the Class 12 Computer Science Course Teaches You
The course moves from understanding a machine, to using standard office tools, to writing your own programs, to storing and presenting data, and finally to the workplace skills a computing job actually demands.
Module 1 builds the vocabulary. Module 2 gives you the everyday tools. Module 3 teaches you to think like a programmer, which is the real point of the subject. Module 4 covers how data is stored and displayed, and Module 5 prepares you for work.
By the end you should be able to write and trace a C++ program, design a simple web page, query a database, and explain how a network moves data from one machine to another.
That is a genuinely employable set of skills at this level, and it also maps neatly onto a BCA, B.Sc. Computer Science or polytechnic route if you plan to study further.
Why Computer Science 330 Is Worth Taking in Class 12
- The theory paper is small. Sixty marks across 39 questions, most of them objective, is a lighter written load than most Class 12 subjects.
- The practical is in your hands. Work prepared in advance and assessed at your own study centre is the most controllable component you will meet.
- Answers are objective. A correct output is a correct output. There is no marker interpretation to worry about, unlike essay based subjects.
- The skills transfer. C++, SQL and HTML are used in real work, not only in exams.
- It suits self study. You can practise everything on any ordinary laptop, which matters when you are studying around a job.
- It opens further study. BCA, B.Sc. Computer Science and polytechnic diplomas all build directly on this material.
How Unnati Education Supports Computer Science 330 Students
We have worked with NIOS learners since 2010, and Computer Science brings us a particular kind of student, usually someone confident with the theory modules who freezes at C++ and stops opening the book.
Our solved TMA sets cover all eleven Computer Science 330 assignment lessons with complete answers, prepared in the format NIOS expects and available in typed and handwritten form.
We also share previous year papers with worked solutions, lesson wise notes for all 29 lessons, and separate practice sets of output based C++ questions and SQL queries, because those are where marks are actually won.
Practical file guidance is available too, covering the programs and exercises you need to prepare before your centre assessment.
Study Material We Provide for Computer Science 330
- Lesson wise notes for all 29 lessons, in English and Hindi
- Solved TMA covering all eleven assignment lessons, ready to submit
- Previous year papers with model answers written to the marking pattern
- Sample papers built on the official 330 question paper design
- C++ output practice sets arranged lesson by lesson
- SQL and HTML question banks for the 21 mark unit
- Practical file guidance for your centre assessment
- WhatsApp doubt support for code you cannot get working
Material is shared after you tell us your session and whether you need English or Hindi. Nothing is sent as a fixed bundle you did not ask for.
Why Students Choose Unnati Education for Computer Science
- All NIOS streams supported: Stream 1, 2, 3 and 4
- Quick TMA delivery in English and Hindi
- Code level doubt solving rather than generic notes
- Complete coverage across all 29 Computer Science lessons
- Delivery across India and to overseas students
- Affordable and flexible options for working learners
Every student arrives with a different gap, so we ask what you have already covered before recommending anything.
Students Who Study Computer Science With Us
Our Computer Science learners write in from Delhi, Uttar Pradesh, Bihar, Rajasthan, Punjab, Maharashtra and West Bengal, and from Indian families based in the UAE, Saudi Arabia, Oman and Nepal.
A good number are working adults returning to study, or students who moved to NIOS partway through the year. For them the marks table on this page matters more than anything else, because their study time is limited and has to go to the right eleven lessons.
Final Words on the Class 12 Computer Science 330 Syllabus
Computer Science 330 is not a hard subject, but it is an easy one to prepare in the wrong order. Twenty nine lessons look intimidating until you see that eighteen decide the paper and eleven of those carry three quarters of the marks.
Work from the official bifurcation table above, follow the unit marks when you plan revision, practise tracing code by hand, and take the practical file seriously. That is the whole method.
If you want solved assignments, notes, past papers or help getting a program to run, message us with your session and language preference.
FAQs on the Class 12 Computer Science 330 Syllabus
How many lessons are there in the NIOS Class 12 Computer Science 330 syllabus?
There are 29 lessons arranged in 5 modules. Eleven lessons are assessed through the Tutor Marked Assignment and carry 40 per cent weightage. The remaining eighteen lessons are tested in the public examination and carry 60 per cent weightage. The theory paper is worth 60 marks with 39 questions and you get 3 hours to complete it.
Which unit carries the most marks in Class 12 Computer Science 330?
Programming in C++ carries 24 of the 60 theory marks, the highest of the four units in the paper. Database Concepts and Web Designing follows with 21 marks, then Office Automation with 8 and Basic Computing with 7. C++ and Module 4 together account for 45 marks, which is three quarters of the entire written paper.
Why does Module 5 not appear in the Computer Science 330 theory paper?
All three Professional Skills lessons sit in the assignment column of the official bifurcation, so none of them is examined in the written paper. The content areas table confirms this because it lists only four units totalling 60 marks. You still study them, because they carry assignment marks and often support your viva at the centre.
What is the question paper pattern for NIOS Computer Science 330?
The theory paper carries 60 marks across 39 questions in 3 hours. It has 12 one mark MCQs, 3 objective questions of 2 marks, 12 more objective questions of 1 mark, 8 very short answer questions of 2 marks, 2 short answer questions of 3 marks and 2 long answer questions of 4 marks. Several sections carry internal choices.
Which lessons come in the Computer Science 330 TMA and which in the exam?
The assignment covers L 1, L 3, L 7, L 11, L 12, L 13, L 22, L 26, L 27, L 28 and L 29. The written paper covers L 2, L 4, L 5, L 6, L 8, L 9, L 10, L 14 to L 21, L 23, L 24 and L 25. The official bifurcation table on this page shows the same split module by module.
Is NIOS Class 12 Computer Science difficult for a beginner?
It is manageable if you start C++ early. The official design sets only 20 per cent of the paper at difficult level, with 50 per cent average and 30 per cent easy. Half the marks come from objective questions. The one real hurdle is programming, and that yields to daily practice rather than to reading theory repeatedly.
Does Computer Science 330 have a practical exam as well as theory?
Yes. Computer Science 330 has a compulsory practical component conducted at your accredited institute or study centre, separate from the 60 mark theory paper. The marks are added to your subject result. Reported figures for the practical split vary between sources, so confirm the current allocation for your session with your study centre or NIOS directly.
How should I prepare C++ for the Computer Science 330 exam?
Read L 12 and L 13 first even though they are assignment lessons, because everything after depends on them. Then move through L 14 to L 21 in order without skipping. Write programs by hand rather than only typing them, and spend fifteen minutes daily predicting the output of short code fragments before checking your answer.
Disclaimer
Unnati Education is an independent academic support platform. We are not affiliated with, endorsed by, or connected to the National Institute of Open Schooling (NIOS) in any way. The bifurcation and question paper design reproduced above are taken from documents published by NIOS. Always confirm current syllabus and practical details on the official NIOS website before your examination.
Written by Prateek Talwar, founder of Unnati Education. Reviewed by Jyoti Sharma, Senior NIOS Counsellor. Page last updated in July 2026.
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