BCA First Semester Notes TU | All 5 Subjects Free PDF 2082
BCA First Semester Notes TU – All 5 Subjects Free PDF | 2082 Batch (Tribhuvan University)
Looking for BCA First Semester Notes TU? You are in the right place. This page provides free, chapter-wise notes for all five subjects of the BCA First Semester under Tribhuvan University (TU), Nepal — fully updated for the 2082 batch revised curriculum. Whether you need Computer Fundamentals, Digital Logic, Mathematics I, English I, or Society and Technology, find direct links to full notes below.
The BCA program under TU’s Faculty of Humanities and Social Sciences (FoHSS) begins with five foundational subjects in the first semester. These subjects build your base in computer hardware, programming logic, mathematics, and professional communication — skills you will apply across all eight semesters of the program.
📢 2082 Batch Update: TU has officially revised the BCA syllabus for the 2082 batch. All notes on eSikhcha are updated to match the new curriculum. Students from the 2079 batch or earlier should note that core subjects remain the same, but internal weightage has changed.
⬇ Download BCA 1st Semester Syllabus PDF (TU) | 📄 View Past Questions – BCA 1st Semester
BCA First Semester Subjects TU – Quick Overview
| # | Subject Name | Code | Credits | Notes |
|---|---|---|---|---|
| 1 | Computer Fundamentals and Applications | CACS 101 | 3 | View Notes → |
| 2 | Society and Technology | CACS 102 | 3 | View Notes → |
| 3 | English I | CACS 103 | 3 | View Notes → |
| 4 | Mathematics I | CACS 104 | 3 | View Notes → |
| 5 | Digital Logic | CACS 105 | 3 | View Notes → |
| Total Credit Hours | 15 | |||
1. Computer Fundamentals and Applications (CACS 101) – BCA TU Notes
Computer Fundamentals and Applications (CACS 101) is the most introductory subject in BCA First Semester TU. It explains how computers work — from physical hardware like the CPU and RAM, to software layers like operating systems and applications. This course starts from zero, making it accessible even for students with no prior formal computing background.
Chapter-wise Topics – Computer Fundamentals CACS 101
| Unit | Topic |
|---|---|
| Unit 1 | Introduction to Computers: definition, history, generations, classification |
| Unit 2 | Number Systems: binary, octal, hexadecimal, conversions, BCD, ASCII |
| Unit 3 | Computer Hardware: CPU structure, ALU, control unit, memory hierarchy (primary and secondary) |
| Unit 4 | Input/Output Devices: keyboard, mouse, monitor, printer, scanner types |
| Unit 5 | Software: system software, application software, programming languages |
| Unit 6 | Operating Systems: functions, types, GUI vs CLI, introduction to Windows and Linux |
| Unit 7 | Computer Networks and Internet: types of networks, internet basics, email, browsers |
| Unit 8 | Multimedia and Computer Security: basics of multimedia, viruses, antivirus, cybersecurity awareness |
👉 Access Full Computer Fundamentals Notes – BCA TU (CACS 101) →
2. Society and Technology (CACS 102) – BCA TU Notes
Society and Technology (CACS 102) is a unique subject in the BCA First Semester TU curriculum — it is not purely technical. It explores how technology shapes society and how society, in turn, influences the direction of technology. For students entering the IT field, understanding these dynamics is as important as writing code.
Chapter-wise Topics – Society and Technology CACS 102
| Unit | Topic |
|---|---|
| Unit 1 | Introduction to Sociology: basic concepts, social groups, institutions |
| Unit 2 | Technology and Society: relationship, impact on employment, lifestyle, education |
| Unit 3 | Social Change and Technology: digital divide, IT in Nepal, rural vs urban tech access |
| Unit 4 | Ethical and Legal Issues in IT: privacy, intellectual property, cybercrime laws in Nepal |
| Unit 5 | Emerging Technologies: AI, robotics, IoT, blockchain and their social implications |
👉 Access Full Society and Technology Notes – BCA TU (CACS 102) →
3. English I (CACS 103) – BCA TU Notes
English I (CACS 103) in BCA First Semester TU focuses on building professional communication skills that IT graduates need in every job. From writing clear technical emails to preparing project reports, this subject gives you the language tools required from day one of your career.
Chapter-wise Topics – English I CACS 103
| Unit | Topic |
|---|---|
| Unit 1 | Grammar Essentials: parts of speech, tenses, subject-verb agreement, active/passive voice |
| Unit 2 | Reading Comprehension: unseen passages, inference, vocabulary in context |
| Unit 3 | Writing Skills: paragraph writing, essay structure, technical report writing |
| Unit 4 | Professional Communication: formal letters, emails, memos, meeting minutes |
| Unit 5 | Presentation Skills: organizing ideas, spoken English, group discussion techniques |
💡 Exam Tip: English I in TU BCA consistently tests report writing and formal letter formats. Practice at least 5 letter types before your exam — they appear every year.
👉 Access Full English I Notes – BCA TU (CACS 103) →
4. Mathematics I (CACS 104) – BCA TU Notes
Mathematics I (CACS 104) is the most important long-term subject in BCA First Semester TU. Concepts covered here reappear in Data Structures, Algorithms, Computer Graphics, and Machine Learning in later semesters. Students are strongly advised not to rush through this subject.
Chapter-wise Topics – Mathematics I CACS 104
| Unit | Topic |
|---|---|
| Unit 1 | Set Theory: sets, subsets, Venn diagrams, set operations, power sets |
| Unit 2 | Real and Complex Numbers: properties, modulus, argument, polar form |
| Unit 3 | Relations and Functions: types of relations, domain, range, inverse functions, composition |
| Unit 4 | Sequences and Series: arithmetic, geometric, sum of series, convergence |
| Unit 5 | Matrices and Determinants: operations, inverse, Cramer’s rule, system of equations |
| Unit 6 | Permutation and Combination: factorial, nCr, nPr, Binomial theorem |
| Unit 7 | Introduction to Probability: events, sample space, conditional probability, Bayes theorem |
💡 Exam Tip: Matrices (Unit 5) carries the highest marks in TU BCA Mathematics I exams. Master finding the inverse of a 3×3 matrix and solving systems of equations using Cramer’s rule — these questions appear every year.
👉 Access Full Mathematics I Notes – BCA TU (CACS 104) →
5. Digital Logic (CACS 105) – BCA TU Notes
Digital Logic (CACS 105) is the most technically demanding subject in BCA First Semester TU. It teaches how computers process data at the hardware level — using binary numbers, logic gates, and circuit design. Mastering Digital Logic is essential before studying Computer Architecture in 2nd semester and Microprocessors in later semesters.
Chapter-wise Topics – Digital Logic CACS 105
| Unit | Topic |
|---|---|
| Unit 1 | Number Systems and Codes: binary, octal, hex, BCD, Gray code, ASCII, conversions |
| Unit 2 | Boolean Algebra: postulates, theorems, De Morgan’s laws, duality principle |
| Unit 3 | Logic Gates: AND, OR, NOT, NAND, NOR, XOR, XNOR — symbols, truth tables |
| Unit 4 | Combinational Circuit Design: SOP, POS forms, Karnaugh map minimization (up to 4 variables) |
| Unit 5 | Arithmetic Circuits: half adder, full adder, half subtractor, full subtractor, BCD adder |
| Unit 6 | Multiplexers, Demultiplexers, Encoders, Decoders: design and applications |
| Unit 7 | Sequential Circuits: SR, D, JK, T flip-flops — truth tables, characteristic equations |
| Unit 8 | Registers and Counters: shift registers, ripple counter, synchronous counter, modulo counters |
⚠️ Exam Alert: Karnaugh map (K-map) problems and flip-flop truth tables appear in almost every TU BCA Digital Logic exam. Ensure you can minimize a 4-variable K-map under time pressure before your exam day.
👉 Access Full Digital Logic Notes – BCA TU (CACS 105) →
How to Pass BCA First Semester TU – Subject-wise Study Strategy
| Subject | Difficulty | Key Focus Area | Scoring Strategy |
|---|---|---|---|
| Computer Fundamentals (CACS 101) | ⭐⭐ Easy | Number systems, memory types, I/O devices | Read notes + solve 3 past papers. Very scoring. |
| Society & Technology (CACS 102) | ⭐⭐ Easy | IT ethics, digital divide, social change | Write 5–6 line answers. Conceptual, not technical. |
| English I (CACS 103) | ⭐⭐⭐ Medium | Report writing, formal letters | Memorize letter formats. Practice paragraph structure. |
| Mathematics I (CACS 104) | ⭐⭐⭐⭐ Hard | Matrices, determinants, probability | Solve 5 past papers. Unit 5 (Matrices) carries highest marks. |
| Digital Logic (CACS 105) | ⭐⭐⭐⭐⭐ Hardest | K-maps, flip-flops, combinational circuits | Draw circuits neatly. K-map + adder questions appear every year. |
Frequently Asked Questions – BCA First Semester Notes TU
How many subjects are in BCA First Semester TU?
There are 5 subjects in BCA First Semester TU: Computer Fundamentals and Applications (CACS 101), Society and Technology (CACS 102), English I (CACS 103), Mathematics I (CACS 104), and Digital Logic (CACS 105). Each carries 3 credit hours, for a total of 15 credit hours.
Which is the hardest subject in BCA First Semester TU?
Most students find Digital Logic (CACS 105) the hardest subject in BCA 1st Semester TU. Topics like Karnaugh maps, flip-flop design, and combinational circuits require considerable practice. Mathematics I is the second most challenging, particularly the matrices and probability units.
Where can I get free BCA First Semester Notes TU?
All BCA First Semester Notes TU are available for free on eSikhcha.com — including Computer Fundamentals, Digital Logic, Society and Technology, Mathematics I, and English I. No login or subscription is required.
Is the BCA First Semester syllabus updated for 2082 batch?
Yes. TU officially updated the BCA syllabus for the 2082 batch. The five first semester subjects remain the same, but unit content and internal weightage have been revised. eSikhcha notes reflect the updated 2082 curriculum. If you are from the 2079 batch or earlier, verify your applicable syllabus version with your college.
What is the course code for Digital Logic in BCA First Semester TU?
The course code for Digital Logic is CACS 105. It carries 3 credit hours and covers Boolean algebra, logic gates, Karnaugh maps, combinational circuits, flip-flops, registers, and counters.
Can I pass BCA First Semester by studying only past questions?
Past questions are essential — TU BCA exams repeat many question patterns, especially in Digital Logic and Mathematics I. However, studying past questions without conceptual understanding is risky. Use eSikhcha notes to build your foundation first, then use past questions for practice and revision.
Explore BCA Notes for All Semesters – Tribhuvan University
Finished with First Semester? Explore free notes for all eight semesters of the BCA program at TU:
- 1st Semester Notes
- 2nd Semester Notes
- 3rd Semester Notes
- 4th Semester Notes
- 5th Semester Notes
- 6th Semester Notes
- 7th Semester Notes
- 8th Semester Notes
About eSikhcha – Free BCA Notes for TU Students in Nepal
eSikhcha.com is a free educational resource for BCA, BBS, and school students across Nepal. All notes are written and reviewed by individuals familiar with the TU BCA curriculum under FoHSS, and are available without any subscription, login, or payment.
📌 Follow us for new notes, past questions, exam notices, and study tips:
X (Twitter) @esikhcha | Facebook Page
💬 Need notes for a specific unit or topic? Leave a comment below and we will prioritize it.