Transcript Introduction

ECE 2110: Introduction to Digital
Systems
Instructor: Dr. Omar Elkeelany
Email: [email protected]
Tel: 931-372-3450
Lecture 1: Introduction
ECE 2110: Introduction to Digital systems
A successful digital designer:
Be competent in:
Debugging
Business requirements and practices
Risk-taking
Communication
ECE 2110: Introduction to Digital systems
Analog vs. Digital
Analog:
time-varying signals
Take any value across a continuous range of
voltage, current or whatever metric
Digital: SAME. But pretend they don’t.
Modeled as taking only one of two discrete
values at any time
0/1, LOW/HIGH, FALSE/TRUE,…
ECE 2110: Introduction to Digital systems
Examples of once-analog systems that
have now gone digital:
 Analog Cameras: film production!

Digital Cameras: Better or Worse?
 DVD: What does it stand for?
 CD players, MP3 players
 Telephone
 Game consoles, HDTVs, etc.
 Traffic Control with smart cameras!
ECE 2110: Introduction to Digital systems
Smart Phones
Analog versus Digital
Analog Voltage meter
Digital Voltage meter
103.5
About 100
Which one is better? WHY?
ECE 2110: Introduction to Digital systems
Analog offers Continuous Spectrum
Digital offer distinct Steps
Continuous light/color spectrum
Discrete 5 level light/color spectrum
ECE 2110: Introduction to Digital systems
Analog has Ambiguity
Digital has only one interpretation
Analog Clock
Digital Clock
1:56 pm
1:56
About 2:00
1:56
1:50
ECE 2110: Introduction to Digital systems
Why Digital?
 Reproducibility of results
 Ease of design: digital design is logical. Uses
discrete math or Boolean Algebra (vs. traditional
math)
 Flexibility/Programmability: programs are easy to
change
 Ease of design Speed of delivery
 Economy. Simplified design allows mass production
 Uses Steadily Advancing Technology
ECE 2110: Introduction to Digital systems