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CBSE Class 12 Computer Science Syllabus 2025-26: Download Syllabus PDF
CBSE Class 12 Computer Science Syllabus 2025-26 - The Central Board of Secondary Education has released the latest CBSE 12th Computer Science syllabus 2025-26 for theory and practical. Students can download the CBSE Board Class 12 syllabus 2026 for Computer Science from the official website: cbseacademic.nic.in. For the current academic year 2025-26, there has been no reduction in the CBSE 12th Computer Science syllabus 2026. The final exam will be held with the complete syllabus.
This Story also Contains
- CBSE Class 12 Computer Science Syllabus 2025-26 - Distribution of marks
- CBSE Computer Science Class 12 Syllabus 2025-26 for Theory
- Prescribed Books for CBSE Class 12 Computer Science
- Preparation Tips for CBSE Class 12 Computer Science
This syllabus is similar to the JEE Main syllabus 2026; hence, students appearing for JEE must complete the syllabus seriously. They can also start solving the JEE Main question paper with solutions to prepare better for the exams.
As per the Computer Science syllabus class 12 CBSE, exams for CBSE 12th will be held for 100 marks, in which 70 marks are allotted for theory and 30 marks are allotted for practicals. Read the complete article to get the latest and detailed syllabus of computer science class 12 CBSE 2026, practical syllabus, preparation tips and other details.
Download CBSE 12th Computer Science Syllabus PDF 2025-26
CBSE Class 12 Computer Science Syllabus 2025-26 |
CBSE Class 12 Computer Science Syllabus 2025-26 - Distribution of marks
Unit No. | Unit Name | Marks |
I | Computational Thinking and Programming - 2 | 40 |
II | Computer Networks | 10 |
III | Database Management | 20 |
Total | 70 |
CBSE Computer Science Class 12 Syllabus 2025-26 for Theory
Unit I: Computational Thinking and Programming – 2
Revision of Python topics covered in Class XI.
Functions: types of function (built-in functions, functions defined in a module, user-defined functions), creating user-defined functions, arguments and parameters, default parameters, positional parameters, function returning value(s), flow of execution, scope of a variable (global scope, local scope)
Exception Handling: Introduction, handling exceptions using try-except-finally blocks.
Introduction to files, types of files (Text file, Binary file, CSV file), relative and absolute paths.
Text file: opening a text file, text file open modes (r, r+, w, w+, a, a+), closing a text file, opening a file using with clause, writing/appending data to a text file using write() and writelines(), reading from a text file using read(), readline() and readlines(), seek and tell methods, manipulation of data in a text file
Binary file: basic operations on a binary file: open using file open modes (rb, rb+, wb, wb+, ab, ab+), close a binary file, import pickle module, dump() and load() method, read, write/create, search, append and update operations in a binary file
CSV file: import csv module, open/close csv file, write into a csv file using writer(), writerow(), writerows() and read from a csv file using reader()
Data Structure: Stack, operations on stack (push & pop), implementation of stack using list.
Unit II: Computer Networks
Evolution of networking: introduction to computer networks, evolution of networking (ARPANET, NSFNET, INTERNET)
Data communication terminologies: concept of communication, components of data communication (sender, receiver, message, communication media, protocols), measuring capacity of communication media (bandwidth, data transfer rate), IP address, switching techniques (Circuit switching, Packet switching)
Transmission media: Wired communication media (Twisted pair cable, Co-axial cable, Fibre-optic cable), Wireless media (Radio waves, Microwaves, Infrared waves)
Network devices (Modem, Ethernet card, RJ45, Repeater, Hub, Switch, Router, Gateway, WIFI card)
Network topologies and Network types: types of networks (PAN, LAN, MAN, WAN), networking topologies (Bus, Star, Tree)
Network protocol: HTTP, FTP, PPP, SMTP, TCP/IP, POP3, HTTPS, TELNET, VoIP
Introduction to web services: WWW, Hyper Text Markup Language (HTML), Extensible Markup Language (XML), domain names, URL, website, web browser, web servers, web hosting
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Attempt NowUnit III: Database Management
Database concepts: introduction to database concepts and its need
Relational data model: relation, attribute, tuple, domain, degree, cardinality, keys (candidate key, primary key, alternate key, foreign key)
Structured Query Language: introduction, Data Definition Language and Data Manipulation Language, data type (char(n), varchar(n), int, float, date), constraints (not null, unique, primary key), create database, use database, show databases, drop database, show tables, create table, describe table, alter table (add and remove an attribute, add and remove primary key), drop table, insert, delete, select, operators (mathematical, relational and logical), aliasing, distinct clause, where clause, in, between, order by, meaning of null, is null, is not null, like, update command, delete command, aggregate functions (max, min, avg, sum, count), group by, having clause, joins: cartesian product on two tables, equi-join and natural join
Interface of python with an SQL database: connecting SQL with Python, performing insert, update, delete queries using cursor, display data by using connect(), cursor(), execute(), commit(), fetchone(), fetchall(), rowcount, creating database connectivity applications, use of %s format specifier or format() to perform queries
CBSE Class 12 Computer Science Syllabus 2025-26 for Practicals
S.No | Particulars | Marks (Total 30) |
1 | Lab Test: 1. Python program (60% logic + 20% documentation + 20% code quality) | 8 |
2. SQL queries (4 queries based on one or two tables) | 4 | |
2 | Report file:
| 7 |
3 | Project (using concepts learnt in Classes 11 and 12) | 8 |
4 | Viva voce | 3 |
Total | 30 marks |
How to download CBSE Class 12 Computer Science Syllabus 2026?
Follow the steps to download the Computer Science class 12 CBSE syllabus in PDF format.
Step 1 - Visit the website cbseacademic.nic.in.
Step 2 - Now click on the ‘Senior secondary curriculum (XI-XII)’
Step 3 - Select the option of ‘Academic Electives - (Group-A)’ and then select the ‘Computer Science New XII’
Step 4 - CBSE Class 12 Computer Science Syllabus 2025-26 will be available to download. Save the syllabus for further reference.
Prescribed Books for CBSE Class 12 Computer Science
CBSE Board prescribes NCERT Books for Class 12 to cover the computer science CBSE class 12 syllabus. The NCERT books are easily available and students can understand all the topics quickly from the NCERT. Computer Science is a practical subject, hence students must excel in the practicals as well. For this, students can refer to practical books as prescribed.
Recommended eBooks
Related eBooks & Sample Papers
Preparation Tips for CBSE Class 12 Computer Science
To prepare for computer science, students need to read the complete CBSE Class 12 Computer Science syllabus 2025-26 and check all the important topics.
Read the standard books as prescribed by NCERT only. If required, then only refer to other books.
Solve CBSE Class 12 question papers 2025-26, to check the examination pattern and marking scheme.
Practice as much as you can. With regular practice, students can check their weak areas and work on them in the meantime.
Attempt CBSE Class 12 sample papers 2025-26 to increase your speed and accuracy in the board examination.
Also, Check:
Frequently Asked Questions (FAQs)
Q: Where can I download CBSE 12th Computer Science syllabus 2026?
A:
Students can download the Class 12 Computer Science syllabus of CBSE 2026 here in the form of a PDF file. The syllabus PDF is also made available on - cbseacademic.nic.in.
Q: Is Class 12 CBSE Computer Science syllabus the same all over India?
A:
Yes, the CBSE Class 12 Computer Science syllabus 2026 is the same for all the CBSE students across India.
Q: What are the passing marks for CBSE class 12th exams 2026?
A:
Students need to score at least 33% marks in each of the 5 subjects in order to pass the CBSE 12th exams 2026.
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Yes, if you’re not satisfied with your marks even after the improvement exam, many education boards allow you to reappear as a private candidate next year to improve your scores. This means you can register independently, study at your own pace, and take the exams without attending regular classes. It’s a good option to improve your results and open up more opportunities for higher studies or careers. Just make sure to check the specific rules and deadlines of your education board so you don’t miss the registration window. Keep your focus, and you will do better next time.
Hello Aspirant,
Yes, in the case that you appeared for the 2025 improvement exam and your roll number is different from what was on the previous year’s marksheet, the board will usually release a new migration certificate. This is because the migration certificate will reflect the most recent exam details, roll number and passing year. You can apply to get it from your board using the process prescribed by them either online or through your school/college.
Yes, if you miss the 1st CBSE exam due to valid reasons, then you can appear for the 2nd CBSE compartment exam.
From the academic year 2026, the board will conduct the CBSE 10th exam twice a year, while the CBSE 12th exam will be held once, as per usual. For class 10th, the second phase exam will act as the supplementary exam. Check out information on w hen the CBSE first exam 2026 will be conducted and changes in 2026 CBSE Board exam by clicking on the link .
If you want to change your stream to humanities after getting a compartment in one subject in the CBSE 12th Board Exam , you actually have limited options to qualify for your board exams. You can prepare effectively and appear in the compartment examination for mathematics again. If you do not wish to continue with the current stream, you can take readmission in the Humanities stream and start from Class 11th again, and continue studying for two more years to qualify for the 12th examination.
The GUJCET Merit List is prepared based on the Class 12th marks and GUJCET marks received by the students. CBSE students who are not from the Gujarat board can definitely compete with GSEB students, as their eligibility is decided based on the combined marks scored by them in GUJCET and the 12th board. The weightage of the GUJCET score is 40% and the weightage of the class 12 scores is 60%.
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