Course Structure of Computer Science for Class 11th.

Course Structure of Computer Science for Class 11th.

11th CBSE

Course Structure of Computer Science for Class 11th.

UNIT 1- Programming and Computation Thinking-  (35 Marks)


  • Familiarization with the basics  of Python programming:  a  simple  “hello world” program, process of writing a program, running it, and print statements; simple data-types: integer, float, string.
  • Introduce the notion of a variable, and methods to manipulate it (a 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.
  • Conditional statements: if, if-else, if-elif-else; simple programs: e.g.: absolute value, sort 3 numbers, and divisibility.
  • The notion of iterative computation and control flow: for, while, flowcharts, decision trees, and pseudo code; write a lot of programs: interest calculation, primarily testing, and factorials.
  • The idea of debugging: errors and exceptions; debugging: PDB, breakpoints.
  • Lists, tuples, and dictionary: finding the maximum, minimum, mean; linear search on list/tuple of numbers, and counting the frequency of elements in a list using a dictionary. Introduce the notion of accessing elements in a collection using numbers and names.
  • Sorting algorithm: bubble and insertion sort; count the number of operations while sorting.
  • Strings: compare, concat, substring; a notion of states and transitions using state transition diagrams.


 Unit 2: Computer Systems and Organisation (CSO)-  (10 Marks)


  • Basic computer organization: description of a computer system and mobile system, CPU, memory, hard disk, I/O, battery, power.
  • Types of software: application, OS, utility, libraries.
  • The language of Bits: bit, byte, MB, GB, TB, and PB.
  • Boolean logic: OR, AND, NAND, NOR, XOR, NOT, truth tables, De Morgan’s laws.
  • Information representation: numbers in base 2, 8, 16, unsigned integers, binary addition.
  • Strings: ASCII, UTF8, UTF32, ISCII (Indian script code)
  • Execution of a program: a basic flow of compilation – program à binary à execution.
  • Interpreters (process one line at a time), a difference between a compiler and an interpreter
  • Running a program: Notion of an operating system, how an operating system runs a program, idea of loading, operating system as a resource manager.
  • The concept of cloud computers, cloud storage (public/private), and a brief introduction to parallel computing.


 Unit 3: Data Management (DM1)- (15 Marks)

  • Relational databases: an idea of a database and the need for it, relations, keys, primary key, foreign key; use SQL commands to create a table, keys, foreign keys; insert/delete an entry, delete a table.
  • SQL commands: select, project, and join; indexes, and a lot of in-class practice.
  • Basics of NoSQL databases – Mongo DB.


 Unit 4: Society, Law, and Ethics (SLE-1) – Cybersafety. (10 Marks)


  • Cyber safety: safely browsing the web, identity protection, confidentiality, social networks, cyber trolls, and bullying.
  • Appropriate usage of social networks: a spread of rumors, and common social networking sites (Twitter, LinkedIn, and Facebook) and specific usage rules.
  • Safely accessing websites: adware, malware, viruses, Trojans.
  • Safely communicating data: secure connections, eavesdropping, phishing, and identity verification.

UNIT-5: Programming in Python:


  • Programming in Python: At least the following Python concepts should be covered in the lab sessions: expressions, conditionals, loops, list, dictionary, and strings. The following are some representative lab assignments.
  • Find the largest and smallest numbers in a list.
  • Find the third largest number in a list.
  • Test for primarily.
  • Find whether a string is a palindrome or not.
  • Given two integers x and n, compute xn.
  • Compute the greatest common divisor and the least common multiple of two integers.
  • Test if a number is equal to the sum of the cubes of its digits. Find the smallest and largest such numbers.


5.2. Data Management: SQL Commands:

 At least the following SQL commands should be covered during the labs: create, insert, delete, select, and join. The following are some representative assignments.

  • Create a student table with the student id, name, and marks as attributes where the student id is the primary key.
  • Insert the details of a new student in the above table.
  • Delete the details of a particular student in the above table.
  • Use the select command to get the details of the students with marks more than 80.
  • Create a new table (name, date of birth) by joining two tables (student id, name) and (student id, date of birth).
  • Create a new table (order ID, Customer Name, and order Date) by joining two tables (order ID, customer ID, and order Date) and (customer ID, customer Name, Contact Name, country).