WBBSE West Bengal Board Class 11 Computer Science Syllabus 2024-25: Free PDF Download

Unit – 1

Computer System and Organisation- 15 Marks

• Basic Computer Organisation

CPU, Primary Memory (RAM, ROM, Cache), Secondary storage device, I/O devices, units of memory (bit, byte, KB, MB, GB, TB, PB).

• Classification of Computers

Super, Mainframe, Mini, PC.

• Concepts of Software

Definition of software, types of software – System Software (Translator: assembler, interpreter, compiler, Loader, Linker, Operating System: Definition and functions, types of OS- Single use, Multiuse, Multiprogramming, Multiprocessing, Time sharing), Application Software (Definition and example), Utility Software, concept of GUI and CUI with examples using LINUX (Basic Commands).

• Number System

Binary, Octal, Decimal, Hexadecimal number system, conversion between number system, Weighted Code (BCD, Binary, 84-2-1 code), non-weighted code (GREY, Excess-3), encoding schemes (ASCII, ISCII, Unicode), 1’s complement, 2’s complement.

• Boolean Algebra

Postulates, logic gates: NOT, AND, OR, NAND, XOR, XNOR, truth tables, De Morgan theorem, SOP, POS, Simplifications using K-Map and Boolean algebra, logic circuits.

Unit – 2

Programming Fundamentals- 10 Marks

• Concept of Programming

 Instruction (Definition, Example), Program (definition, example), Programming Language (concept of high level, low level and assembly language), Procedural and Non-procedural programming, Concept of Structured Programming, Object Oriented Programming

• Algorithm fundamentals

Definition, characteristic of the algorithm, recursive and non-recursive algorithms, representation of algorithm using a flowchart, pseudo code, the efficiency of the algorithm, space complexity, time complexity, asymptotic notation- big O, big Omega, big Theta.

• Introduction to Problem Solving

Steps for Problem Solving (analysing the problem, developing an

algorithm, coding, testing, debugging).

Unit – 3

Introduction to C 10 Marks

• Basic Structure

Character set, keywords, identifiers, constants, variables and type declaration, Sample programs, pre-processor.

• Operators

Arithmetic, Relational, Logical, Assignment, Increment and Decrement, Conditional, comma; operator precedence and associatively; arithmetic expression-evaluation and type conversion. Character I/O, Escape sequence and formatted I/O.

• Branching and Looping

if, if-else, while, do-while, for.

• Arrays and Structure

One-dimensional and Two-dimensional have different types of uses. String handling with arrays – read and write, concatenation, comparison, string functions.

Structures: Initialization; arrays of a structure, arrays within structures, structure within structure.

• User-defined functions

Need, Call by Reference, call by value, return value and types, nesting of functions, recursion.

• Pointers

Declaration and initialization, operators, pointer arithmetic, accessing variables, pointer & arrays, strings, and functions.

Unit – 1

Data Structure- 15 Marks

• Definition, and types of data structure- linear and non-linear.

• Abstract Data types.

• Arrays: 1D, 2D and their applications.

• Linked List: Single, circular and double link list.

• Stack

Stack operations (push and pop), implementation using array and list, application of Stack.

• Queue

Queue operation implementation using array and list, circular queue, de-queue, and priority queue.

• Recursion

Definition.

Advantages and limitations of recursion.

Understanding what goes behind recursion (internal stack implementation), and tail recursion.

• Searching and Sorting

Linear Search, Binary Search and their comparison.

Bubble Sort and its implementation.

Unit – 2

Computer Networks- 10 Marks

• Introduction to Networking

Analogue and Digital Communication.

Mode of Communication- Simplex, half duplex and full duplex.

Network Architecture- Client-server, Peer to Peer.

Serial and Parallel Communication.

Measuring Capacity of Communication Media (bandwidth, channel capacity, baud).

Synchronous and asynchronous Transmission Mode.

Baseband and Broadband network.

• Transmission Media

Wired Communication Media (Twisted Pair, Co-axial cable, Fiber Optic).

Wireless Communication Media (Radio wave, Microwave, Infrared, Satellite).

• Network Connecting Devices

Modem, Ethernet Card, RJ45, Repeater, Hub, Switch, Router, Gateway, Wifi card.

• Network Type and Topologies

Types of Network-LAN, MAN, WAN.

Network Topologies- Bus, Star, Ring, Tree.

• Network Protocols -HTTP, FTP, PPP, SMTP, TCP/IP, POP3, TELNET, HTTPS, VolP.

• Referential Model- OSI Model (Basic Concept, use of devices and protocols at different layers).

• Introduction to Web Services: WWW, HTML, XML, IP Addresses, Domain names, URL, ISP, Website, Web browser, Web Server, Web Hosting.

Unit – 3

Ethics- 10 Marks

• Digital Footprints.

• Data Protection: Intellectual property rights (copyright, patent, trademark), violation of IPR (plagiarism, copyright infringement, trademark infringement), open-source software and licensing (Creative Commons, GPL and Apache).

• Cyber Crime: Definition, hacking, eavesdropping, phishing and fraud emails, ransomware, cyber trolls, cyberbullying.

• Cyber safety: Safely browsing the web, identity protection, confidentiality.

• Malware: Viruses, trojans, adware.

• E-waste management: Proper disposal of used electronic gadgets.

• Information Technology Act: (IT Act).