Semester 3 is where KTU CS gets serious. Theory of Computation and Data Structures and Algorithms are two of the most foundational subjects in the entire CS programme. Object Oriented Programming is the PBL subject.
Semester 3
Theory of Computation and Data Structures begin
8 Subjects
OOP is the first PBL subject
Free Resources
Syllabus, notes and PYQs free for all subjects
Semester 3 is where KTU CS gets serious. Theory of Computation (PCCST302) and Data Structures and Algorithms (PCCST303) are two of the most foundational subjects in the entire CS programme. Theory of Computation is abstract and mathematical — finite automata, regular languages, context-free grammars, and Turing machines form the theoretical bedrock of computer science. Data Structures and Algorithms is where you learn to think algorithmically — trees, graphs, sorting, and searching are the subjects tested in every technical placement interview and in GATE CS.
Object Oriented Programming (PBCST304) is the PBL subject — 60 CIA marks mean your code, project submissions, and internal assessments matter more than the final exam. Digital Electronics and Logic Design (GAEST305) connects hardware to software — the sequential and combinational circuits you study here are the actual building blocks of the processors you will study in Computer Organisation (S4).
All subjects for this semester are listed below. Click on any subject to access notes, PYQs, and video classes.
Mathematics for Information Science-3
GAMAT301
Theory of Computation
PCCST302
Data Structures and Algorithms
PCCST303
Object Oriented Programming (PBL)
PBCST304
Digital Electronics and Logic Design
GAEST305
Economics for Engineers or Engineering Ethics (S3/S4 G-slot)
UCHUT346 / UCHUT347
Data Structures Lab
PCCSL307
Digital Lab
PCCSL308
Video Classes (Full Course)
Comprehensive recorded video classes covering the entire syllabus.
Buy CourseData Structures and Algorithms is the most important S3 subject for placements, GATE, and your overall CS career.
PCCST303 Data Structures and Algorithms is the most important S3 subject for placements, GATE, and your overall CS career. Implement everything from scratch in code — not just read. BST, AVL, heap, graph traversals (BFS/DFS) must become second nature.
PCCST302 Theory of Computation is abstract and time-consuming. Start early — do not leave automata and Turing machines for the last week. Understanding the formal proofs takes time.
PBCST304 OOP is PBL — 60 CIA. Write clean, working code for every assignment. Understand inheritance and polymorphism conceptually, not just syntactically.
GAEST305 Digital Electronics — cover combinational and sequential circuits as separate units. Flip-flop state tables and Karnaugh maps need practice problems, not reading.
Data Structures Lab (PCCSL307) — implement every data structure you study in theory. The lab viva often tests whether you actually understand the code you wrote.
If you have Engineering Economics in S3, the 50/50 CIA/ESE pattern means consistent preparation throughout the semester.
Continue exploring KTU resources and other semesters.
Struggling with a subject or need guidance on how to prepare for your semester? Getting the right help early saves your CGPA.
Common questions about KTU KTU CS S3 — 2024 Scheme resources and coaching.
S3 includes Mathematics-3, Theory of Computation, Data Structures and Algorithms, OOP (PBL), Digital Electronics and Logic Design, Economics or Ethics (G-slot), Data Structures Lab, and Digital Lab.
It is the most important and challenging S3 subject. Students who write code daily and implement data structures from scratch are far better prepared than those who only read notes.
Object Oriented Programming (PBCST304) is the PBL subject. It follows 60 CIA / 40 ESE marking. Your code submissions and project work carry more weight than the university exam.
Very relevant. Theory of Computation is one of the highest-weightage topics in GATE CS — regular languages, CFLs, and computability questions appear consistently.
PCCSL308 covers logic circuit experiments, flip-flop implementations, counter design, and register wiring using ICs and breadboards. It carries 2 credits.
Either Economics for Engineers (UCHUT346) or Engineering Ethics and Sustainable Development (UCHUT347) — whichever the institution schedules for S3, with the other in S4.
Yes. Video classes for both subjects are available. Call +91 9895006772 to enrol.
BTechTutor provides free notes and PYQs for all KTU CS S3 subjects.