Digital Electronics - Vol 1 | 4. Logic Gates and Related Devices - Part A by Abraham | Learn Smarter
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4. Logic Gates and Related Devices - Part A

Logic gates serve as the foundational building blocks of digital systems, enabling the implementation of Boolean expressions. This chapter discusses fundamental logic gates including OR, AND, and NOT gates, derived gates like NAND, NOR, EXCLUSIVE-OR, and EXCLUSIVE-NOR, as well as their functions illustrated with truth tables. It concludes with an overview of applications in practical circuit design and device selection.

Sections

  • 4

    Logic Gates And Related Devices

    This section covers the fundamentals of logic gates, including basic gates, their functions, truth tables, and applications in digital electronics.

    Learning Practice

  • 4.1

    Positive And Negative Logic

    This section introduces the concepts of positive and negative logic in digital systems, detailing how binary states are represented by different voltage or current levels.

    Learning Practice

  • 4.2

    Truth Table

    A truth table displays all the possible combinations of input binary variables and their corresponding outputs, essential for understanding logic systems.

    Learning Practice

  • 4.3

    Logic Gates

    This section introduces logic gates, the fundamental building blocks of digital systems, including their types and functions.

    Learning Practice

  • 4.3.1

    Or Gate

    The OR gate is a fundamental logic gate that performs a logical disjunction on two or more input variables, producing a high output unless all inputs are low.

    Learning Practice

  • 4.3.2

    And Gate

    The AND gate is a fundamental logic circuit where the output is HIGH only when all inputs are HIGH.

    Learning Practice

  • 4.3.3

    Not Gate

    The NOT gate is a basic logic circuit that outputs the complement of its input, often referred to as an inverting circuit.

    Learning Practice

  • 4.3.4

    Exclusive-Or Gate

    The EXCLUSIVE-OR (XOR) gate is a two-input logic gate that outputs a high signal when its inputs are different and a low signal when they are the same.

    Learning Practice

  • 4.3.5

    Nand Gate

    The NAND gate, a fundamental logic gate in digital electronics, combines an AND operation with a NOT operation.

    Learning Practice

  • 4.3.6

    Nor Gate

    The NOR gate is a fundamental logic gate that performs logical negation of the OR operation, producing a HIGH output only when all inputs are LOW.

    Learning Practice

  • 4.3.7

    Exclusive-Nor Gate

    The EXCLUSIVE-NOR gate, also known as EX-NOR, serves as the complement of the EXCLUSIVE-OR gate, producing a high output when its inputs are the same.

    Learning Practice

  • 4.3.8

    Inhibit Gate

    The INHIBIT gate is a logic gate that can enable or inhibit the passage of logic signals based on control inputs.

    Learning Practice

References

chapter 4 part A.pdf

Class Notes

Memorization

What we have learnt

  • Logic gates are essential c...
  • Truth tables provide a syst...
  • Positive and negative logic...

Final Test

Revision Tests