Implementing every gate with NOR Gate

Duration: 6 min

This video lesson is available to enrolled students.

Return to /learn/COAL-INDIA-MANAGEMENT-TRAINEE/digital-logic/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. Paper-2 | Programming & Data Structures: 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
  3. Paper-2 | Databases / DBMS & SQL: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control
  4. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  5. Paper-2 | Computer Networks & Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, 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 Access Technologies, Network Security
  6. Paper-2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  7. Paper-2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  8. Paper-2 | Theory of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines
  9. Paper-2 | Computer Organization & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Programming the Basic Computer
  10. Paper-2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  11. Paper-1 | General Awareness: Polity, Physics, Biology, Chemistry, Static General Knowledge, GK- Current Affairs, History, Geography, Indian Economy, Environment
  12. Paper-1 | Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Data Interpretation, Blood Relations, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Clock, Calendar, Cubes & Dices, Directions (Direction Test), Analogy, Seating Arrangements, Analytical Reasoning (Counting Figures Reasoning)
  13. Paper-1 | Quantitative Aptitude: Ratio and Proportion (Ratios), Mixture and Alligation, Permutation and Combination, Number System, HCF LCM, Speed Time and Distance, Average, Age Problems, Percentage, Profit and Loss, Time and Work, Pipe and Cistern, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Mensuration and Geometry, Probability, Statistics, Arithmetic, Algebra
  14. Paper-1 | English: Vocabulary, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Construction, Cloze Test (Cloze Passage)
  15. Coal India Previous Year Paper:
  16. Engineering Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Linear Algebra, Calculus
  17. Coal India Mock Test:
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…