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
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.
CBSE Class 12 Computer Science Syllabus 2025-26 |
Unit No. | Unit Name | Marks |
I | Computational Thinking and Programming - 2 | 40 |
II | Computer Networks | 10 |
III | Database Management | 20 |
Total | 70 |
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
Unit 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
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 |
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.
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.
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.
Frequently Asked Questions (FAQs)
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.
Yes, the CBSE Class 12 Computer Science syllabus 2026 is the same for all the CBSE students across India.
Students need to score at least 33% marks in each of the 5 subjects in order to pass the CBSE 12th exams 2026.
On Question asked by student community
Yes, you can switch from Science in Karnataka State Board to Commerce in CBSE for 12th. You will need a Transfer Certificate from your current school and meet the CBSE school’s admission requirements. Since you haven’t studied Commerce subjects like Accountancy, Economics, and Business Studies, you may need to catch up before or during 12th. Not all CBSE schools accept direct admission to 12th from another board, so some may ask you to join Class 11 first. Make sure to check the school’s rules and plan your subject preparation.
Hello
For the 12th CBSE Hindi Medium board exam, important questions usually come from core chapters like “Madhushala”, “Jhansi ki Rani”, and “Bharat ki Khoj”.
Questions often include essay writing, letter writing, and comprehension passages. Grammar topics like Tenses, Voice Change, and Direct-Indirect Speech are frequently asked.
Students should practice poetry questions on themes and meanings. Important questions also cover summary writing and translation from Hindi to English or vice versa.
Previous years’ question papers help identify commonly asked questions.
Focus on writing practice to improve handwriting and presentation. Time management during exams is key to answering all questions effectively.
Hello,
If you want to improve the Class 12 PCM results, you can appear in the improvement exam. This exam will help you to retake one or more subjects to achieve a better score. You should check the official website for details and the deadline of this exam.
I hope it will clear your query!!
For the 2025-2026 academic session, the CBSE plans to conduct board exams from 17 February 2026 to 20 May 2026.
You can download it in pdf form from below link
all the best for your exam!!
Hii neeraj!
You can check CBSE class 12th registration number in:
Hope it helps!
This ebook serves as a valuable study guide for NEET 2025 exam.
This e-book offers NEET PYQ and serves as an indispensable NEET study material.
As per latest syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
As per latest syllabus. Chemistry formulas, equations, & laws of class 11 & 12th chapters
As per latest 2024 syllabus. Study 40% syllabus and score upto 100% marks in JEE
As per latest syllabus. Maths formulas, equations, & theorems of class 11 & 12th chapters