Computer Science (2024-25) CLASS XI Code No. 083 Syllabus

 Computer Science (2024-25)
CLASS XI Code No. 083

Unit 1: Computer Systems and Organisation

● Basic computer organisation: Introduction to Computer System, hardware,

software, input device, output device, CPU, memory (primary, cache and

secondary), units of memory (bit, byte, KB, MB, GB, TB, PB)

● Types of software: System software (Operating systems, system utilities, device

drivers), programming tools and language translators (assembler, compiler, and

interpreter), application software

● Operating System(OS): functions of the operating system, OS user interface

● Boolean logic: NOT, AND, OR, NAND, NOR, XOR, NOT, truth tables and De

Morgan’s laws, Logic circuits

● Number System: Binary, Octal, Decimal and Hexadecimal number system;conversion between number systems

● Encoding Schemes: ASCII, ISCII, and Unicode (UTF8, UTF32)

● Introduction to Problem-solving: Steps for Problem-solving (Analyzing the problem,

developing an algorithm, coding, testing, and debugging), representation of

algorithms using flowchart and pseudocode, decomposition

● Familiarization with the basics of Python programming: Introduction to Python,

Features of Python, executing a simple “hello world" program, execution modes:

interactive mode and script mode, Python character set, Python tokens( keyword,

identifier, literal, operator, punctuator), variables, concept of l-value and r-value, use

of comments

● Knowledge of data types: Number(integer, floating point,complex), boolean,

sequence(string, list, tuple), None, Mapping(dictionary), mutable and immutable data types.

● Operators: arithmetic operators, relational operators, logical operators, assignment

operators, augmented assignment operators, identity operators (is, is not),

membership operators (in not in)

● Expressions, statement, type conversion, and input/output: precedence of

operators, expression, evaluation of an expression, type-conversion (explicit and

implicit conversion), accepting data as input from the console and displaying output.

● Errors- syntax errors, logical errors, and run-time errors

● Flow of Control: introduction, use of indentation, sequential flow, conditional and iterative flow

● Conditional statements: if, if-else, if-elif-else, flowcharts, simple programs: e.g.:absolute value, sort 3 numbers and divisibility of a number.

● Iterative Statement: for loop, range(), while loop, flowcharts, break and continue statements, nested loops, suggested programs: generating pattern, summation of

series, finding the factorial of a positive number, etc.

● Strings: introduction, string operations (concatenation, repetition, membership and

slicing), traversing a string using loops, built-in functions/methods–len(),

capitalize(), title(), lower(), upper(), count(), find(), index(), endswith(), startswith(),

isalnum(), isalpha(), isdigit(), islower(), isupper(), isspace(),lstrip(), rstrip(), strip(),

replace(), join(), partition(), split()

● Lists: introduction, indexing, list operations (concatenation, repetition, membership and slicing), traversing a list using loops, built-in functions/methods–len(), list(),append(), extend(), insert(), count(), index(), remove(), pop(), reverse(), sort(),sorted(), min(), max(), sum(); nested lists, suggested programs: finding the maximum, minimum, mean of numeric values stored in a list; linear search on list of numbers and counting the frequency of elements in a list.

● Tuples: introduction, indexing, tuple operations (concatenation, repetition,

membership and slicing); built-in functions/methods – len(), tuple(), count(),

index(), sorted(), min(), max(), sum(); tuple assignment, nested tuple; suggested

programs: finding the minimum, maximum, mean of values stored in a tuple; linearsearch on a tuple of numbers, counting the frequency of elements in a tuple.

● Dictionary: introduction, accessing items in a dictionary using keys, mutability of a

dictionary (adding a new term, modifying an existing item), traversing a dictionary,

built-in functions/methods – len(), dict(), keys(), values(), items(), get(), update(),

del, clear(), fromkeys(), copy(), pop(), popitem(), setdefault(), max(), min(),

sorted(); Suggested programs: count the number of times a character appears in a

given string using a dictionary, create a dictionary with names of employees, theirs alary and access them.

● Introduction to Python modules: Importing module using ‘import <module>’ and

using from statement, importing math module (pi, e, sqrt(), ceil(), floor(), pow(),

fabs(), sin(), cos(), tan()); random module (random(), randint(), randrange()),

statistics module (mean(), median(), mode()).

Unit 3: Society, Law and Ethics

● Digital Footprints

● Digital Society and Netizen: net etiquettes, communication etiquettes, social media etiquettes

● 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, cyber bullying

● 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)

● Technology and society: Gender and disability issues while teaching and using computers