Grade 11: Computer Science

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About Course

Grade 11: Computer Science (NEB)

Subject code: Com. 427                           Credit Hours: 5                        Working Hours: 160


Computer Science is the study of computers and computing systems, including the principles, design, implementation, and applications of computer technology. It encompasses various areas such as algorithms, data structures, programming languages, software development, artificial intelligence, machine learning, computer networks, databases, and more. Computer Science is not just limited to hardware and software but also involves understanding how computers can be used to solve real-world problems efficiently.

In the 21st century, Computer Science has become increasingly important due to the rapid advancement of technology and its pervasive influence on all aspects of modern life. Here are some reasons why Computer Science is essential in the 21st century:

1. Technology-driven society:

2. Job opportunities:

3. Innovation and problem-solving:

4. Data-driven decision-making:

5. Automation and efficiency:

6. Global connectivity:

7. Technological advancements:

Offering computer science courses on online platforms to Nepalese students is a great initiative. Online education provides flexibility and accessibility to students from different locations and backgrounds. By making computer science courses available online, students in Nepal can access quality education and develop the skills required to participate in the global digital economy. It can also help bridge the technology gap and contribute to the technological growth and development of the country.

Introduction About Computer Science Course

The world has witnessed a radical change in the field of Information and Communication Technology (ICT) in recent and this process is still going on. The relevance of computer education has been increasing day by day. Realizing the same the curriculum of computer science for Grades 11  has been developed according to the National Curriculum Framework, 2076. The study of this course will help the students to enter the job market. This will also provide basis for the students to pursue their further study in the field.

This curriculum comprises of an introduction to basic computer system, the basic number system and Boolean logic, computer software and operating system, application package, multimedia and network. It also includes contents of web technology, programming, information security and cyber law, digital society and computer ethics and recent trends in ICT. The course itself is of practical nature and the pedagogical approaches in delivering the course should consider the balance between theory and practice. The same applies in case of student evaluation procedure too.

The curriculum has been divided to different sections: level-wise competences, grade-wise learning outcomes, scope and sequence of contents with their elaboration, some indication to learning facilitation process and student assessment.

Level-wise Competencies

1. Relate principles of computer system including input, process, output and storage devices,
Boolean logic and number system.
2. Use operating system, word processor, spread sheet and apply in real-life and educational
3. Design website using new web technologies.
4. Demonstrate the programming concept and logic into software development process.
5. Use Database concept in basic SQL level.
6. Apply networking concept into LAN and wireless network.
7. Define OOPs concept and trace the recent trends of technological enhancement in 21st

Learning Outcomes of Grade 11

S. N. Content Area Learning outcomes
1 Computer system 1.1 Introduce computer with its characteristics and application.

1.2 Describe the evolution of computer.

1.3 Describe the measurement unit of processing speed and storage unit and use them.

1.4 Introduce Super, Mainframe, Mini and Microcomputers and compare them.

1.5 Introduce mobile computing and its application and use it.

1.6 Sketch and describe computer architecture and organization.

1.7 Identify and explain the components of computer system.

1.8 Introduce and explain microprocessor and bus system.

1.9 Introduce and explain primary and secondary memory.

1.10 Identify and use input and output devices.

1.11 Describe hardware interfaces and use them.

2 Number System and Conversion Boolean Logic 2.1 Introduce the number system, Decimal-Binary-Octal-Hexadecimal conversion and binary calculation.

2.2 Introduce the Boolean Algebra, Boolean values and truth table, Boolean expression and Boolean function.

2.3 Introduce and explain Logic Gates.

2.4 Describe Laws of Boolean Algebra.

3 Computer Software and Operating System 3.1 Explain software with its categories.

3.2 State the concept of operating system with its functions and etymologies.

3.3 Describe GUI based operating system and its features.

3.4 Introduce desktop application and windows environment.

3.5 Create file and folders with file explorer.

3.6 Customize the start screen and desktop.

3.7 Install and remove the devices.

3.8 Manage password and privacy.

3.9 Use control panel, system tools and accessories

3.10 State the concept of open sources and mobile operating system.

3.11 Introduce Linux, UNIX and Linux distribution.

3.12 Explain the types of mobile operating system.

4 Application Package 4.1 Describe the office package (Word, Processor, Spreadsheet and Presentation) and apply them.

4.2 Introduce the domain-specific tools.

5 Programming Concepts & Logics 5.1 Introduce the programming language and identify its levels.

5.2 Introduce and compare Compiler, Interpreter and Assembler.

5.3 Introduce Syntax, Semantic and Runtime errors and apply them.

5.4 Introduce control structures and use them.

5.5 Identify program design tools and use them.

5.6 Describe absolute binary, BCD, ASCII and Unicode.

5.7 State the features and structure of C language.

5.8 Introduce C preprocessor and header files and use them.

5.9 Introduce character set and apply it.

5.10 Explain the Identifiers, Keywords and Tokens.

5.11 Introduce and explain the basic data types.

5.12 Introduce constants, variables, operators and expressions and apply them.

5.13 Identify the types of specifier and apply them.

5.14 Identify the simple and compound statements and apply them.

5.15 Introduce Input/output (I/O) functions.

5.16 Introduce Selection Control Statement and Iteration Control Statement.

5.17 Describe array and string functions and apply them.

6 Web Technology I 6.1 Explore web browsers and search engines.

6.2 Overview internet and web technology.

6.3 Explain and use Content Management System (CMS).

6.4 Describe with objectives and structure of HTML.

6.5 Differentiate between tags and attributes.

6.6 Describe and use the types of tags in HTML.

6.7 Introduce Cascading Style Sheet (CSS), describe its types and use them.

7 Multimedia 7.1 Introduce and apply multimedia.

7.2 Describe the components of multimedia.

8 Information Security and Cyber Law 8.1 Describe digital society and computer ethics.

8.2 State the concept of information security and cybercrime.

8.3 Explore and apply the protective measures of cybercrime.

8.4 Identify key aspects intellectual property right and follow it.

8.5 State the concept of digital signature and use it.

8.6 Analyze cyber law and ICT policy in Nepal

Scope and Sequence of Contents



  1. Computer System (20 Hour)
1.1 Introduction of computer

1.1.1 Definition, characteristics and application of computer

1.1.2 Evolution of computer technology

1.1.3 Measurement unit of processing speed and storage unit

1.1.4 Super, Mainframe, Mini and Microcomputers

1.1.5 Mobile Computing and its Application

1.2 Computer system and I/O devices

1.2.1 Concept of computer architecture and organization

1.2.2 Components of computer system: input unit, output unit, processing unit, memory unit and storage

1.2.3 Microprocessor: basic concepts, clock speed, word length, components and functions

1.2.4 Bus System: data bus, address bus and control bus

1.2.5 Primary memory: Definition, RAM, ROM, Cache, Buffer, types of RAM and ROM

1.2.6 Secondary Memory: Definition, Magnetic Disk, Flash Memory, Optical Disk, External Storage Device and memo stick

1.2.7 Input Devices – Keyboard, Mouse, Scanner, Light Pen, OMR, OCR, BCR, MICR, Scanner, Touch Screen, Microphone and Digital Camera.

1.2.8 Output Devices: Monitor (LCD, LED), Printer (Dot Matrix, Inkjet, Laser), Speaker

1.2.9 Hardware Interfaces: Parallel Port, Serial Port, USB Ports, HDMI and Expansion Slots

2.  Number System and

Conversion Boolean Logic (11 Hour)

2.1 Number System and conversion

2.1.1 Decimal, Binary, Octal, Hexadecimal Number System & conversion

2.1.2 Calculation in binary addition, subtraction

2.1.3 One’s and Two’s complement methods of binary subtraction

2.2 Logic Function and Boolean Algebra

2.2.1 Introduction to Boolean algebra

2.2.2 Introduction to Boolean values, truth table, Boolean expression and Boolean function.

2.2.3 Logic Gates –AND, OR, NOT, NAND, NOR, XOR and XNOR – its definition, truth table, logic symbol, logic function

2.2.4 Laws of Boolean algebra – Boolean identities, Complement Laws, Identity, Commutative, Associative and Distributive

2.2.5 Statement and verification of Laws of Boolean algebra using truth table

3. Computer Software and

Operating System (12 Hour)

3.1 Concept of Software

3.1.1 Definition of software

3.1.2 Categories of software: System, Utility, Application, Web Based, Mobile Apps

3.2 Concept of Operating System

3.2.1 Introduction to Operating System

3.2.2 Role of Operating System

3.2.3 Functions of an Operating System

3.2.4  Operating system terminology: multiprogramming, multitasking, multiprocessing and distributed

3.3 Windows Operating System

3.3.1 Introduction to GUI based Operating system and its features

3.3.2 Working in Desktop Application and Window Environment

3.3.3 Manage Files and Folders with File Explorer

3.3.4 Customize the start screen and desktop

3.3.5 Installing and removing devices

3.3.6 Manage passwords and privacy levels

3.3.7 Use of control panel, system tools and accessories

3.4 Open sources and Mobile Operating System

3.4.1  Concept of Open Sources Operating System

3.4.2  Introduction to Linux and UNIX

3.4.3  Linux Distributions

3.4.4  Concept of Mobile Operating System

3.4.5  Types of Mobile Operating System

4. Application Package (5 Hour) 4.1  Introduction to Office Package –

Word processor, Presentation tool, spreadsheet package, database management system;

4.2  Introduction to domain-specific tools – school management system, inventory management system,

payroll system, financial accounting, hotel management, weather forecasting system.

5. Programming Concepts &

Logics (8 hours)

5.1  Programming Concept

5.1.1 Introduction to programming languages

5.1.2 Low level, High level, 4 GL programming languages

5.1.3 Compiler, Interpreter and Assembler

5.1.4 Syntax, Semantic and Runtime errors

5.1.5 Control Structures: Sequence, Selection and Iteration

5.1.6 Program Design tools – Algorithm, Flowchart and Pseudocode

5.1.7 Absolute binary, BCD, ASCII and Unicode

5.2  C Programming Languages

5.2.1 Introduction and features of C Language

5.2.2 Structure of C program

5.2.3 C Preprocessor and Header Files

5.2.4 Character Set used in C

5.2.5 Use of Comments

5.2.6 Identifiers, Keywords and Tokens

5.2.7 Basic Data Types in C

5.2.8 Constants and Variables

5.2.9 Type of Specifier

5.2.10 Simple and Compound Statements

5.2.11 Operators and Expressions: arithmetic, relational, logical, assignment, unary and conditional operators

5.2.12 Input/output (I/O) Functions

5.2.13 Selection Control Statement: Decisions (if, if-else, if-else-if, nested and, switch)

5.2.14 Iteration Control Statement: Looping (while, do while, for nested)

5.2.15 Array: definition, types(1D and 2D), matrix addition and subtraction

5.2.16 String: definition and string function : strlen(), strcat(), strcmp(), strrev(), strcpy(), strlwr(), strupr()

6. Web Technology I (8 hour) 6.1 Introduction: Web development introduction

6.2 Web browsers and search Engines

6.3 Overview of various internet & web technologies

6.4 Content Management System (CMS) 6.4. HTML: The Language of the Web

6.4.1 Objectives

6.4.2 Structure of HTML

6.4.3 Published and Hosting

6.4.4 HTML Tags vs. Attributes

6.4.5. Basic Tags of HTML: HTML, HEAD, TITLE, BODY (Setting the Fore color and Background color, Background Image, Background Sound)

6.4.6 Heading tag (H1 to H6) and attributes(ALIGN),

6.4.7 FONT tag and Attributes (Size: 1 to 7 Levels, BASEFONT, SMALL, BIG,COLOR)

6.4.8 Paragraph Formatting (P)

6.4.9 Break Line BR

6.4.10. Comment in HTML ()

6.4.11. Formatting Text (B, I, U, Mark, Sup, Sub, EM, BLOCKQUOTE, PREFORMATTED)

6.4.12. Ordered List- OL (LI, Type- 1, I, A, a; START,VALUE)

6.4.13. Unordered List – UL (Bullet Type- Disc, Circle, Square, DL, DT, DD)

6.4.14 ADDRESS Tag

·  Creating Links: Link to other HTML documents or data objects

·  Links to other places in the same HTML documents

·  Links to places in other HTML documents

·  Anchor Tag and Hyperlink

6.4.15. Tables: Creating Tables using TH, TR and TD tags

6.4.16 Forms: Creating form using Textbox, radio, checkbox, text area, button

6.4.17 Introduction to HTML 5 Elements including audio, embed, source, track and video attributes

6.4.18 HTML 5 Graphics using canvas and svg tags

6.4.19 Concept of domain name and web hosting

6.5 Cascading Style Sheets

6.5.1 Introduction to Cascading Style Sheet (CSS)

6.5.2 Inline CSS

6.5.3 Embedded CSS

6.5.4 External CSS

7. Multimedia (6 hour) 7.1 Introduction to Multimedia

7.2 Component of Multimedia: Text, Graphics, Audio, Video and Animation

7.3 Application of Multimedia

8. Information Security and Cyber Law (10 hour) 8.1 Digital society and computer ethics

8.2 Concept of Information security

8.3 Concept of Cybercrime

8.4 Malicious software and Spam

8.5 Protection from cybercrime

8.6 Intellectual Property Right

8.7 Concept of Digital Signature

8.8 Concept of Cyber Law in Nepal

8.9 ICT Policy in Nepal

Suggested project work

Grade-wise sample project works are suggested below.
1. Prepare basic computer system devices and peripheral specifications of your personal
2. Write a report on “Major cyber bullying in Nepal” with real examples and suggest the
preventing measures
3. Conduct a survey to identify the popular search engines (any 5) and its features.
4. Develop the real life project on Office Package or web technology

Learning Facilitation Method and Process

Students should be facilitated to learn rather than just helping them to accumulate information. Student centered teaching-learning process is highly emphasized in delivering this course. Students are supposed to adopt multiple pathway of learning such as; online search, field visit,
library work, laboratory work, individual and group work, research work etc. with the support of teacher. Self-study is highly encouraged and learning should not be confined to the scope of curriculum. Teacher should keep in mind intra and inter-disciplinary approach to teaching and learning, as opposed to compartmentalization of knowledge. Supportive role of parents/guardians in creating conducive environment for promoting the spirit of inquiry and creativity in students’ learning is anticipated. The following methods and techniques will be adopted in delivering this course.

 Practical/application/experimental methods
 Laboratory based practical works
 Project work methods (Research work i.e. survey and mini research, innovative work or experiential learning, connection to theory and application)
 Lecture
 Interaction
 Question answer
 Demonstrations
 Online based instructions
 Cooperative learning

 Group discussions (satellite learning group, peer group, small and large group)
 Daily assignment

Student Evaluation

Evaluation is an integral part of learning process. Both formative and summative modes of evaluation are emphasized. Formative evaluation will be conducted so as to provide regular feedback for students. Class tests, unit tests, oral question-answer, home assignment etc., are some
ways of conducting formative evaluation. There will be separate evaluation of theoretical and practical learning. Summative evaluation embraces internal evaluation including evaluation of project/research work or innovative work, theoretical examination and practical examination.

a) Internal Evaluation

Internal evaluation is both formative and summative. For summative purpose it covers 25% of total weightage. Project work assessment is the internal assessment of reports and presentation of their project works either individually or group basis. In case of group presentation, every member of the group should submit a short reflection on the presented report in their own language. The criteria for internal evaluation are given in the table.

S. N. Criteria Marks
1 Classroom participation (Daily attendance, home assignment and classwork, participation in learning, participation in other activities) 3
2 Trimester exam (3 marks from each trimester exam) 6
3 Project work, project report and presentation 16
Total 25

b) External Evaluation

External evaluation covers 75 % of total weightage. External evaluation consists of both the practical and written examination. The practical examination carries 25% and written examination carries 50%. Practical examination will be conducted in the presence of examiners. Practical evaluation must cover all the practical course areas and the criteria for Practical evaluation are in the table given below.

S. N. Criteria Marks
1 Writing process of given practical task 5
2 Demonstration of practical task 15
3 Viva voce 5
Total 25

The types and number questions for written examination will be as per the test specification chart
developed by the Curriculum Development Centre.Computer system

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What Will You Learn?

  • From Grade 11 Computer Science, students will learn the fundamentals of computers, programming, and problem-solving. The course covers topics such as computer components, programming concepts (variables, data types, loops, conditionals), algorithms, and basic data structures. Students will be introduced to object-oriented programming principles, web development basics (HTML, CSS), and the fundamentals of databases and networking. Through practical exercises and programming assignments, they will develop hands-on experience in solving real-world problems. Additionally, the course may address ethical and social considerations related to technology. By the end of Grade 11, students will have gained a solid foundation in computer science concepts, programming skills, and an understanding of how computers can be used to address various challenges. This prepares them for more advanced studies in computer science and opens doors to potential careers in the technology industry.

Course Content

Computer system

Number System and Conversion Boolean Logic

Computer Software and Operating System

Application Package

Programming Concepts & Logics

Web Technology I


Information Security and Cyber Law