This course covers the entite syllabus of grade 11 portion. After the completion of syllabus through board paper discussion is done and startegies are discussed to do well in Exam. 

Computer Science 
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)
Unit 2: Computational Thinking and Programming - I
● 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; linear

search 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, their
salary and access them.
● Introduction to Python modules: Importing module using ‘import ’ 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