Implementing every gate with NOR Gate

Duration: 6 min

This video lesson is available to enrolled students.

Return to /learn/DSSSB-TGT-COMPUTER-SCIENCE-PAPER-2/digital-electronics/boolean-expression/universal-realization/asset-implementing-every-gate-with-nor-gate after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Programming, Data Structures, OOP & Java: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References, Language Design, Intro to Compilers, Visual Basics, Syntax Analysis: Bottom-Up, Object Oriented Technology
  3. Computer Networks, TCP/IP & Network Security: Introduction to CN, Data Communication, DLL: Flow Control, DLL: Access Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Access Technologies, Network Security, Society, Law & Ethics, Cloud Computing, Mobile Computing, Net Layer:Routing Protocol, Cyber Safety and Security
  4. Teaching Methodology: Child Development, Concept of Pedagogy, Theories, Inclusive Education, Experiential Pedagogy, Assessment & Evaluation, Curriculum Framework & Reforms, National Education Policy (NEP) 2020, Psychology, Teaching-Learning Process, Personality Development, Teaching Methods & Strategies, Learning and Motivation, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Nature, Objectives & Characteristics of Teaching, Teaching-Learning Aids & ICT Integration, Classroom Management & Communication, Evaluation, Assessment & Measurement, Curriculum & School Environment, Inclusive Education & Special Needs, Professional Development & Ethics
  5. Digital Electronics / Boolean Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  6. Operating Systems & Linux: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, File Management, Disc Scheduling, Unix OS, Linux OS, Distributed Systems, Windows OS
  7. Data Base Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, File Organization & Indexing, Transaction Management, Concurrency Control, Database Security & Authorization, Database Recovery, Data Warehousing & Mining
  8. Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, HTML Basics, CSS, Emerging Technologies, JavaScript-Basics, .Net Programming, Electronic Data Interchange and E-Commerce, XML
  9. Computer Fundamentals, IT Basics & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer, Terms & Abbreviations, MS Office Applications, Instr Formats & Modes, Floating Point Rep
  10. Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  11. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, extras, Fundamentals of Systems and Information Systems
  12. Design & Analysis of Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  13. Mathematics - I, II, III, IV: Permutation and Combination, Logarithm, Linear Algebra, Algebra, Calculus, Trigonometry, Vectors, Set Theory, Functions, Relations, Propositional and Predicate Logic, Research Process Steps, Graph Theory
  14. Computer Graphics, Multimedia & Mobile Computing: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, Multimedia
  15. Emerging Trends: Emerging Tech Trends, Knowledge Representation, Natural Language Processing
  16. Statistical Techniques: Probability, Statistics
  17. Interpolation - DI: Data Interpretation
  18. Basis of Physics: Physics
  19. Previous Year Paper:
  20. Business Studies and Management: Business Communication, Business Organization and Management, Financial Accounting, Business Economics, Management Information System (MIS), Knowledge Management & New Economy
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video lecture demonstrates how to implement standard logic gates using only NOR gates, a concept central to digital electronics and universal gates. The instructor, Sanchit Jain Sir, systematically derives the circuit diagrams and boolean expressions for NOT, AND, OR, NAND, and EX-OR gates. He begins with the simplest implementation, the NOT gate, and progresses to more complex structures like the EX-OR gate. The lecture concludes with a comparative table summarizing the number of gates required for each function when using NOR versus NAND bases, providing a quick reference for students.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with the title "Implementing Every Gate with NOR Gate" displayed at the top. The instructor starts by drawing a NOR gate symbol on the whiteboard. He demonstrates the NOT gate implementation by connecting both inputs of the NOR gate to the same signal 'a'. He writes the boolean equation $\overline{a + a} = \overline{a}$ to mathematically prove this equivalence. Next, he moves to the AND gate, drawing two NOR gates configured as NOT gates for inputs 'a' and 'b'. These outputs feed into a third NOR gate. He writes the derivation $\overline{\overline{a} + \overline{b}} = \overline{\overline{a}} \cdot \overline{\overline{b}} = a \cdot b$ on the board, showing how the combination creates the AND function.

  2. 2:00 – 5:00 02:00-05:00

    The instructor proceeds to implement the OR gate. He draws a NOR gate followed by a NOT gate (a NOR gate with tied inputs). He writes the equation $\overline{\overline{a + b}} = a + b$ to show that inverting the NOR output yields the OR function. He then tackles the NAND gate. He draws a circuit with four NOR gates: two acting as NOT gates for inputs 'a' and 'b', a third combining them to form an AND operation, and a fourth inverting that result. The final output is $\overline{a \cdot b}$. The instructor sketches the full schematic, showing the interconnection of these four gates to achieve the NAND logic, ensuring the visual representation matches the boolean derivation.

  3. 5:00 – 6:28 05:00-06:28

    The final section covers the EX-OR gate implementation. The instructor draws a complex circuit involving five NOR gates. He writes down the boolean algebra steps on the board, starting with terms like $[a + (\overline{a+b})]$ and $[(\overline{a+b}) + b]$. He simplifies these to $[a + \overline{b}]$ and $[\overline{a} + b]$, which are then combined to form the standard EX-OR expression $a\overline{b} + \overline{a}b$. The video concludes with a "Conclusion" table. This table lists the gate counts for implementing NOT, AND, OR, NAND, NOR, EX-OR, and EX-NOR using both NOR and NAND bases. The instructor circles the values, highlighting that NOR requires 1, 3, 2, 4, 1, 5, and 4 gates respectively for the listed functions.

The lecture provides a comprehensive guide to constructing logic circuits using only NOR gates. By breaking down each gate type, the instructor reinforces the concept of universal gates. The progression from simple NOT gates to complex EX-OR circuits illustrates the versatility of the NOR gate. The final summary table serves as a crucial revision tool, allowing students to quickly compare the efficiency of NOR versus NAND implementations in terms of gate count. This visual and mathematical approach ensures a deep understanding of digital logic design principles.

Loading lesson…