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SYLLABUS GATE Computer Science and Information Technology Syllabus 2027: CS PDF and Exam Pattern
GATE CS syllabus 2027 with the official PDF, 100-mark exam pattern and complete section-wise topic tables for Computer Science and Information Technology.
Updated:
GATE CS syllabus 2027Computer Science and Information TechnologyGATE 2027 PDFIIT Madras
Use the available GATE CS Syllabus 2027 download resources and review the detailed syllabus, unit-wise topics, exam pattern information, preparation guidance below.
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Key Highlights
- CS is the official GATE code for Computer Science and Information Technology.
- The official syllabus contains 10 sections: Engineering Mathematics; Digital Logic; Computer Organization and Architecture; Programming and Data Structures; Algorithms; Theory of Computation; Compiler Design; Operating System; Databases; Computer Networks.
- The paper is a 3-hour Computer-Based Test for 100 marks, including 15 marks of General Aptitude.
- Allowed second-paper codes when CS is primary: DA, EC, GE, MA, ME, PH, RA, ST.
- The official IIT Madras PDF is available in the download section.
GATE CS Syllabus 2027 Overview
The official GATE CS syllabus 2027 for Computer Science and Information Technology is organized into 10 sections, covering Engineering Mathematics, Digital Logic, Computer Organization and Architecture, Programming and Data Structures and the remaining paper-specific areas listed below. This page follows the IIT Madras syllabus order, provides the correct 100-mark exam pattern, and links the official PDF so aspirants can prepare from a complete, verified checklist.
How to Prepare from the GATE CS Syllabus
- Create one checklist for every official section and retain the same sequence used in the PDF.
- Start with a diagnostic test, then allocate more study time to weak high-coverage sections instead of dividing time equally.
- Solve previous-year GATE questions immediately after completing each topic and record errors by concept, calculation and time pressure.
- Revise formulas, definitions and frequently confused conditions in short weekly cycles, followed by mixed-section tests.
- Use the official PDF as the final scope document; coaching notes should expand a listed topic, not introduce an unrelated syllabus.
GATE CS Official Source and Internal Links
The syllabus tables were checked against the IIT Madras GATE 2027 CS PDF. Use the download section for the database-hosted copy, the GATE syllabus hub to switch papers, and the notification page for registration dates and policy updates.
Exam Pattern
GATE CS Exam Pattern 2027
| Section | Marks | How it applies |
|---|---|---|
| General Aptitude | 15 | Common to all GATE papers |
| Engineering Mathematics | 13 | Paper-specific engineering mathematics |
| Core subject questions | 72 | Selected test-paper syllabus |
| Total | 100 | 3-hour CBT |
General Aptitude
Marks
15
How it applies
Common to all GATE papers
Engineering Mathematics
Marks
13
How it applies
Paper-specific engineering mathematics
Core subject questions
Marks
72
How it applies
Selected test-paper syllabus
Total
Marks
100
How it applies
3-hour CBT
GATE CS Question and Marking Rules
| Question type | Possible marks | Negative marking |
|---|---|---|
| MCQ | 1 or 2 | Yes: 1/3 for a wrong 1-mark MCQ; 2/3 for a wrong 2-mark MCQ |
| MSQ | 1 or 2 | No negative marking and no partial marking |
| NAT | 1 or 2 | No negative marking |
MCQ
Possible marks
1 or 2
Negative marking
Yes: 1/3 for a wrong 1-mark MCQ; 2/3 for a wrong 2-mark MCQ
MSQ
Possible marks
1 or 2
Negative marking
No negative marking and no partial marking
NAT
Possible marks
1 or 2
Negative marking
No negative marking
Syllabus Breakdown
GATE CS Syllabus 2027 - Official Section-wise Topics
The tables below preserve the section order and complete topic coverage published by IIT Madras for the GATE 2027 CS paper. Use each table as a study and revision checklist, and verify any later corrigendum against the official PDF.
Section 1: Engineering Mathematics
| Topic area | Official syllabus coverage |
|---|---|
| Discrete Mathematics | Propositional and first order logic. Sets, relations, functions, partial orders and lattices. Monoids, Groups. Graphs: connectivity, matching, colouring. Combinatorics: counting, recurrence relations, generating functions. |
| Linear Algebra | Matrices, determinants, system of linear equations, eigenvalues and eigenvectors, LU decomposition. |
| Calculus | Limits, continuity and differentiability, Maxima and minima, Mean value theorem, Integration. |
| Probability and Statistics | Random variables, Uniform, normal, exponential, Poisson and binomial distributions. Mean, median, mode and standard deviation. Conditional probability and Bayes theorem. |
| Topic area | Official syllabus coverage |
|---|---|
| Discrete Mathematics | Propositional and first order logic. Sets, relations, functions, partial orders and lattices. Monoids, Groups. Graphs: connectivity, matching, colouring. Combinatorics: counting, recurrence relations, generating functions. |
| Linear Algebra | Matrices, determinants, system of linear equations, eigenvalues and eigenvectors, LU decomposition. |
| Calculus | Limits, continuity and differentiability, Maxima and minima, Mean value theorem, Integration. |
| Probability and Statistics | Random variables, Uniform, normal, exponential, Poisson and binomial distributions. Mean, median, mode and standard deviation. Conditional probability and Bayes theorem. |
Section 2: Digital Logic
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Boolean algebra and minimization – algebraic technique, Karnaugh map, tabular method. Design of combinational and sequential circuits. Number representation and arithmetic (fixed and floating point). |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Boolean algebra and minimization – algebraic technique, Karnaugh map, tabular method. Design of combinational and sequential circuits. Number representation and arithmetic (fixed and floating point). |
Section 3: Computer Organization and Architecture
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Instruction set and addressing modes. Design of arithmetic and logic unit (ALU). Design of control unit – hardwired and microprogrammed. Memory interfacing and hierarchy: performance, cache memory mapping. I/O interface (interrupt and DMA). Instruction pipelining, pipeline hazards. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Instruction set and addressing modes. Design of arithmetic and logic unit (ALU). Design of control unit – hardwired and microprogrammed. Memory interfacing and hierarchy: performance, cache memory mapping. I/O interface (interrupt and DMA). Instruction pipelining, pipeline hazards. |
Section 4: Programming and Data Structures
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Programming in C. Recursion. Arrays, stacks, queues, linked lists, trees, binary search trees, binary heaps, graphs. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Programming in C. Recursion. Arrays, stacks, queues, linked lists, trees, binary search trees, binary heaps, graphs. |
Section 5: Algorithms
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Searching, sorting, hashing. Asymptotic worst case time and space complexity. Algorithm design techniques: greedy, dynamic programming and divide‐and‐conquer. Graph traversals, minimum spanning trees, shortest paths. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Searching, sorting, hashing. Asymptotic worst case time and space complexity. Algorithm design techniques: greedy, dynamic programming and divide‐and‐conquer. Graph traversals, minimum spanning trees, shortest paths. |
Section 6: Theory of Computation
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Regular expressions and finite automata. Context-free grammars and push-down automata. Regular and context-free languages, pumping lemma. Turing machines and undecidability. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Regular expressions and finite automata. Context-free grammars and push-down automata. Regular and context-free languages, pumping lemma. Turing machines and undecidability. |
Section 7: Compiler Design
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Lexical analysis, parsing, syntax-directed translation. Runtime environments. Intermediate code generation. Local optimisation, Data flow analyses: constant propagation, liveness analysis, common sub expression elimination. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Lexical analysis, parsing, syntax-directed translation. Runtime environments. Intermediate code generation. Local optimisation, Data flow analyses: constant propagation, liveness analysis, common sub expression elimination. |
Section 8: Operating System
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | System calls, processes, threads, inter‐process communication, concurrency and synchronization. Deadlock. CPU and I/O scheduling. Memory management and virtual memory. File systems. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | System calls, processes, threads, inter‐process communication, concurrency and synchronization. Deadlock. CPU and I/O scheduling. Memory management and virtual memory. File systems. |
Section 9: Databases
| Topic area | Official syllabus coverage |
|---|---|
| ER‐model. Relational model | relational algebra, tuple calculus, SQL. Integrity constraints, normal forms. File organization, indexing (e.g., B and B+ trees). Transactions and concurrency control. |
| Topic area | Official syllabus coverage |
|---|---|
| ER‐model. Relational model | relational algebra, tuple calculus, SQL. Integrity constraints, normal forms. File organization, indexing (e.g., B and B+ trees). Transactions and concurrency control. |
Section 10: Computer Networks
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Principles of Layering; Basics of switching (circuit, packet and virtual circuit) and performance metrics; |
| Data link layer | error detection, Medium Access Control, Ethernet; Distance vector and link state routing; IPv4 - Fragmentation, CIDR Notation, Network Address Translation; TCP-flow control and congestion control, socket API; DNS and HTTP. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Principles of Layering; Basics of switching (circuit, packet and virtual circuit) and performance metrics; |
| Data link layer | error detection, Medium Access Control, Ethernet; Distance vector and link state routing; IPv4 - Fragmentation, CIDR Notation, Network Address Translation; TCP-flow control and congestion control, socket API; DNS and HTTP. |
Download Official PDFs & Question Papers
Official GATE CS Syllabus 2027 PDF
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Frequently Asked Questions
Use the featured PDF button on this page. It opens the database-hosted copy of the official IIT Madras CS syllabus.
Yes. General Aptitude is compulsory in every GATE 2027 test paper and carries 15 marks.
The paper uses Multiple Choice Questions, Multiple Select Questions and Numerical Answer Type questions carrying one or two marks.
Negative marking applies only to incorrect MCQs. MSQ and NAT questions have no negative marking, and MSQs have no partial marking.
Follow the official section order, complete topic-level concepts and examples, solve previous-year questions after each unit, and use full-length mock tests only after completing the major sections.