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

Download DLD 3# LECTURE 003 COMPLETE and more Slides Digital Logic Design and Programming in PDF only on Docsity!

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