Not Gate

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/HPSC-PGT-COMPUTER-SCIENCE/digital-logic-circuits/logic-gates-hardware/evolution-not-or-and-gates/asset-not-gate after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. HPSC Interview Preparation: Interview Preparation
  2. Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis, DSA using Python
  3. Data Structure & Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Sorting Algorithms, Minimum Spanning Trees, Time Complexity Analysis, Graph Theory, Shortest Path Algos
  4. Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
  5. Computer System & Organisation: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Programming the Basic Computer
  6. Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, SQL, File Organization & Indexing, Transaction Management, Concurrency Control
  7. Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling
  8. Digital Logic & Circuits: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  9. Theory Of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Pushdown Automata & CFG, Turing Machines, Moore & Mealy Machines
  10. 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. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, Data Warehousing & Mining
  12. Introduction to Emerging Trends: Emerging Tech Trends
  13. Digital Society & Cyber Law: Society, Law & Ethics
  14. HPSC PGT Previous Year Paper:
  15. HPSC Assistant Professor Previous Year Paper:
  16. Live Sessions: HPSC Live Sessions, EMRS TGT/PGT Live Class
  17. Full Mock Test:
  18. HPSC PGT - MOCK Test Series:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This short lecture introduces the Not Gate, also called an inverter. The slide states that it represents the NOT logical operator and is a unary operator that simply complements the input. The instructor presents the standard logic symbol with input X, output Y = X', and an inversion bubble at the output. A truth table is completed to show that input 0 produces output 1, while input 1 produces output 0. A circuit diagram on the right shows a voltage source connected through switch A to an inductor L, used as a physical illustration of switching behavior. Because only sampled screenshots are available and no audio transcript is provided, the exact spoken explanation beyond visible slide text cannot be fully verified.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The slide titled "Not Gate(Inverter)" defines the gate as a unary operator that complements its input. The visible text reads, "It represents not logical operator is also known as inverter, it is a unary operator, which simply complement the input." A truth table with columns "Input" and "Output" shows the header "X / Y = X'" and rows for inputs 0 and 1. The instructor points to the Not Gate symbol, highlighting input X, output Y, and the small inversion bubble. On the right, a circuit diagram labeled "Voltage source" shows switch A in series with an inductor L.

  2. 2:00 – 3:14 02:00-03:14

    The truth table is filled in to demonstrate inversion: input 0 gives output 1, and input 1 gives output 0. The visible header changes to "Input X" and "Output Y = X'" in later frames. The instructor gestures between the gate symbol, the truth table, and the circuit diagram on the right. The circuit includes a voltage source, an ammeter, and an inductor load, illustrating the switching action associated with the gate. Handwritten values appear in the output column, confirming the complement relationship.

The central idea is that a Not Gate inverts a single binary input. The key evidence includes the slide definition, the logic symbol with an inversion bubble, and the completed truth table: 0 becomes 1 and 1 becomes 0. The circuit diagram with a voltage source, switch A, inductor L, and ammeter provides a physical analogy for switching behavior. For revision, students should remember the term inverter, the unary nature of the gate, the symbol's bubble indicating inversion, and the truth table values. The lesson is concise and focused on one gate type.

Loading lesson…