DLD 3# LECTURE 003 COMPLETE, Slides of Digital Logic Design and Programming

Complete lecture DLD #3rd lecture

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2021/2022

Available from 12/11/2022

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Digital Logic Design
Digital Logic Design
Lecture#3
Logic gates
Intro to Boolean Algebra
By: Engr. Humayun Salahuddin
Class of BSCS, MULTAN.
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Digital Logic DesignDigital Logic Design

Lecture# Logic gates Intro to Boolean Algebra

By: Engr. Humayun Salahuddin

Class of BSCS, MULTAN.

BINARY LOGIC

Logic Gates

  • (^) Basic Building Blocks
  • (^) Logic Gate Symbol
  • (^) Unique function
  • (^) Truth or Function Table

AND LOGIC

AND Gate Truth Table

  • (^) Two input AND logic. It is logical multiplication Z=A.B Input Output A B Z=A.B 0 0 0 0 1 0 1 0 0 1 1 1

THREE INPUT AND GATE TRUTH TABLE

  • (^) Following is three input AND truth table Z=A.B.C Input Output A B C Z=A.B.C 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1

OR logic

  • (^) Two input OR GATE Symbol
  • (^) Switch Circuit

OR logic Truth Table

  • (^) Two input OR logic. It is logical addition. Z=A+B Input Output A B Z=A+B 0 0 0 0 1 1 1 0 1 1 1 1

NOT LOGIC

OR logic

  • (^) NOT Logic GATE Symbol
  • (^) Switch Circuit

NAND LOGIC

NAND Gate

  • (^) Two input NAND GATE Symbol

THREE INPUT AND GATE TRUTH TABLE

  • (^) Following is three input AND truth table Z=A.B.C Input AND NAND A B C Z=A.B.C 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1 0 Z

NOR LOGIC