1.27 Bitwise Operators Left and Right Shift

Duration: 4 min

This video lesson is available to enrolled students.

Return to /learn/RSSB-SENIOR-COMPUTER-INSTRUCTOR/paper-2-python/operators-expressions/bitwise-operators/asset-127-bitwise-operators-left-and-right-shift after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: Selection Decision Table (Decision Making)
  7. Paper-1 | General Science: Physics, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: State Wise GK, GK- Current Affairs
  9. Paper-2 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
  24. Live Sessions: RSSB Live Sessions
  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a lecture on bitwise operators in Python, focusing on left and right shift operations. The instructor begins by introducing the topic and then demonstrates the left shift operator using the variable 'a = 10'. He explains that a left shift by 'n' positions is equivalent to multiplying the number by 2 to the power of 'n' (a * 2^n). He provides several examples, showing that a << 1 equals 20, a << 2 equals 40, and so on. The lecture then transitions to the right shift operator, using the variable 'b = 10'. The instructor explains that a right shift by 'n' positions is equivalent to dividing the number by 2 to the power of 'n' (a / 2^n), with integer division. He demonstrates this with examples like b >> 1 equals 5, b >> 2 equals 2, and b >> 3 equals 1. The video concludes with a summary of the concepts.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video starts with a title slide for a lecture on 'Bitwise Operators' with a focus on 'Left and Right Shift'. The instructor, standing in front of a digital whiteboard, begins the lesson by writing 'a = 10' and then proceeds to write a series of Python print statements: 'print(a << 1)', 'print(a << 2)', 'print(a << 3)', and 'print(a << 4)'. He then writes 'Left shift' and explains the concept, writing the formula 'a << n = a * 2^n' on the board. He demonstrates the first example, writing 'print(a << 1) => 10 * 2^1 = 20'. He continues to write out the calculations for the next two examples, showing 'print(a << 2) => 10 * 2^2 = 40' and 'print(a << 3) => 10 * 2^3 = 80'. He then writes the final example, 'print(a << 4) => 10 * 2^4 = 160'. The instructor is actively writing and explaining the concepts throughout this segment.

  2. 2:00 – 3:37 02:00-03:37

    The instructor transitions to the right shift operator. He erases the previous content and writes 'b = 10' and 'Right shift'. He then writes a series of print statements: 'print(b >> 1)', 'print(b >> 2)', 'print(b >> 3)', and 'print(b >> 4)'. He explains that a right shift is equivalent to division by 2^n, writing the formula 'a >> n = a / 2^n'. He demonstrates the first example, writing 'print(b >> 1) => 10 * 1/2 = 5'. He continues with the next example, writing 'print(b >> 2) => (10 * 1/2) => 5 * 1/2 => 2.5 => 2', noting the integer division. He then writes 'print(b >> 3) => 10 * 1/2^3 => 10/8 => 1'. For the final example, he writes 'print(b >> 4) => 10 * 1/2^4 => 10/16 => 0'. The instructor concludes the lesson by summarizing the concepts and saying 'Thank You'. The video ends with the instructor speaking to the camera.

The lecture provides a clear and structured explanation of bitwise shift operators in Python. It begins with the left shift operator, using a variable 'a = 10' to demonstrate that shifting left by 'n' bits is equivalent to multiplying by 2^n. The instructor uses a step-by-step approach, writing out the calculations for each example. The lesson then logically transitions to the right shift operator, using a similar variable 'b = 10' to show that shifting right by 'n' bits is equivalent to dividing by 2^n, with the result being truncated to an integer. The use of concrete examples and the explicit formula for each operation makes the concepts easy to understand and apply.

Loading lesson…