CBSE Class 11 Computer Science Syllabus 2020 2021

CBSE Class 11 Computer Science Syllabus 2020 2021. Students must always refer to the latest syllabus issued by CBSE before starting studies. Download the latest syllabus for 2020 2021 released by CBSE to plan your studies as per the latest syllabus and guidelines issued by CBSE NCERT. The syllabus, weightage of chapters, blue print of question papers and the design of question papers is issued every year for the benefit of students. Access and download syllabus for all subjects here.
 
Unit I: Computer Systems and Organisation

● Basic computer organisation: description of a computer system and mobile system, CPU, memory, hard disk, I/O, battery.
● Types of software: Application software, System software and Utility software.
● Memory Units: bit, byte, MB, GB, TB, and PB.
● Boolean logic: NOT, AND, OR, NAND, NOR, XOR, NOT, truth tables and De Morgan’s laws, Logic circuits
● Number System: numbers in base 2, 8, 16 and binary addition.
● Encoding Schemes: ASCII, UTF8, UTF32, ISCII and Unicode.
● Concept of Compiler and Interpreter
● Operating System (OS) - need for an operating system, brief introduction to functions of OS, user interface
● Concept of cloud computing and cloud services (SaaS,IaaS,PaaS), cloud (public/private), Blockchain technology
 
Unit II: Computational Thinking and Programming - 1
 
Introduction to Problem solving: Problem solving cycle - Analysing a problem, designing algorithms and representation of algorithm using flowchart and pseudo-code.
 
Decomposition - concept, need for decomposing a problem, examples of problem solving using decomposition.
Familiarization with the basics of Python programming: a simple “hello world" program, the process of writing a program (Interactive & Script mode), running it and print statements; simple data-types: integer, float and string.
● Features of Python, Python Character Set, Token & Identifiers, Keywords, Literals, Delimiters, Operators.
● Comments: (Single line & Multiline/ Continuation statements), Clarity & Simplification of expression 
● Introduce the notion of a variable and methods to manipulate it (concept of L-value and R-value even if not taught explicitly).
● Knowledge of data types and operators: accepting input from the console, assignment statement, expressions, operators and their precedence.
● Operators & types: Binary operators-Arithmetic, Relational Operators, Logical Operators, Augmented Assignment Operators.
● Execution of a program, errors- syntax error, run-time error and logical error.
● Conditional statements: if, if-else, if-elif-else; simple programs: e.g.: absolute value, sort 3 numbers and divisibility of a number.
● Notion of iterative computation and control flow: for(range(),len()), while, using flowcharts, suggested programs: calculation of simple and compound interests, finding the factorial of a positive number etc.
● Strings: Traversal, operations – concatenation, repetition, membership; functions/methods–len(), capitalize(), title(), upper(), lower(), count(), find(), index(), isalnum(), islower(), isupper(), isspace(), isalpha(), isdigit(), split(),
partition(), strip(), lstrip(), rstrip(), replace(); String slicing.
● Lists: Definition, Creation of a list, Traversal of a list. Operations on a list -concatenation, repetition, membership; functions/methods–len(), list(),
 
 
 
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