Digital Logic-Digital Logic Design-Lecture Slides, Slides of Digital Logic Design and Programming

Prof. Sourabhi Kapoor delivered this course at Bengal Engineering and Science University. This lecture covers following points for Digital Logic Design course: Digital, logic, Variables, Functions, Truthtables, Circuits, Gates, Networks, Binary, Discrete, Electronic

Typology: Slides

2011/2012

Uploaded on 07/30/2012

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Digital Logic
CHAPTER NUMBER : 01
Variables, functions, truth tables,
Introduction to Logic Circuits:
gates and networks
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Digital Logic

• CHAPTER NUMBER : 01

• Variables, functions, truth tables,

• Introduction to Logic Circuits:

• gates and networks

Logic circuits

  • • Logic circuits perform
  • operations on digital
  • signals
  • – Implemented as
  • electronic circuits where
  • signal values are
  • restricted to a few
  • discrete values
  • • In binary logic circuits
  • there are only two
  • values, 0 and 1
  • • The general form of a
  • logic circuit is a
  • switching network

Variables and functions

  • • The simplest binary

element is a switch that

  • has two states
  • • If the switch is

controlled by x , we say

the

  • switch is open if x =

and closed if x =

Variables and functions

  • • Assume the switch
  • controls a lightbulb as
  • shown
  • – The output is defined as
  • the state of the light L
  • • If the light is on -> L=
  • • If the light is off -> L=
  • • The state of L, as
  • function of x is
  • – L(x)= x
  • • L( x ) is a logic function
  • x is an input variable

Variables and functions (AND)

Variables and functions (OR)

Variables and functions

Inversion

Truth tables

Truth tables

Logic gates and networks

Logic gates and networks

Logic gates and networks

Analysis of a logic network