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ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction Vishwani D. Agrawal James J. Danaher Professor Department of Electrical and Computer Engineering Auburn University, Auburn, AL 36849 http://www.eng.auburn.edu/~vagrawal [email protected] Fall 2014, Aug 18 Fall 2014, Aug 18 ELEC2200-002 Lecture 1 ELEC2200-002 Lecture 1 1

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ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction. Vishwani D. Agrawal James J. Danaher Professor Department of Electrical and Computer Engineering Auburn University, Auburn, AL 36849 http://www.eng.auburn.edu/~vagrawal [email protected]. Course Webpage. - PowerPoint PPT Presentation

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Page 1: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

ELEC 2200-002Digital Logic Circuits

Fall 2014Introduction

Vishwani D. AgrawalJames J. Danaher Professor

Department of Electrical and Computer EngineeringAuburn University, Auburn, AL 36849http://www.eng.auburn.edu/~vagrawal

[email protected]

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 11

Page 2: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Course Webpage

http://www.eng.auburn.edu/~vagrawal/COURSE/E2200_Fall14/course.html

Or,Go to professor’s webpage http://www.eng.auburn.edu/~vagrawal/

Click on ELEC2200-002 Digital Logic Circuits, MWF 2PM, Broun 238

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 22

Page 3: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Course OrganizationText book: V. P. Nelson, H. T. Nagle, B. D. Carroll and J. D. Irwin, Digital Logic Circuit Analysis and Design, Prentice Hall, 1995, ISBN 0-13-463894-8.

Instructor: Vishwani D. Agrawal, Broun 323, x41853, [email protected].

Graduate Assistant: George Conover, [email protected], Broun 357, MW 9:00-10:30AM.

Classroom: Broun 238, MWF 2:00PM-2:50PM.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 33

Page 4: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Student Performance Evaluation

Homework (20%): 1 per week, most weeks.

Three Class Tests (20% each):

Test 1, Friday, Sep 12, 2014, 2:00PM-2:50PM, Broun 238.

Test 2, Wednesday, Oct 22,, 2014, 2:00PM-2:50PM, Broun 238.

Test 3, Wednesday, Nov 19, 2014, 2:00PM-2:50PM, Broun 238.

Final Exam (20%): Wednesday, Dec 10, 2014, 4:00PM-6:30PM, Broun 238.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 44

Page 5: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Course Objective

This course introduces the student to the design of digital logic circuits, both combinational and sequential, and the design of digital systems in a hierarchical, top-down manner. The student is also introduced to the use of computer-aided design tools used to develop digital circuits.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 55

Page 6: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Electronic Systems

Example 1: Cell phone transceiver.

Example 2: Digital computer.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 66

Page 7: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

An RF Communications System

77

Dup

lexe

r

PA

LO

LO

LO

VGA

VGA

PhaseSplitter

PhaseSplitter

Dig

ital S

igna

l Pro

cess

or (

DS

P)ADC

ADC

DAC

DAC

90°

90°

0°

0°

RF IF Mixed-Signal

Superheterodyne Transceiver

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1

Page 8: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

An Alternative RF Communications System

88

Dup

lexe

r

PA

LO

LO

PhaseSplitter

PhaseSplitter

Dig

ital S

igna

l Pro

cess

or (

DS

P)ADC

ADC

DAC

DAC

90°

90°

0°

0°

RF Mixed-Signal

Zero-IF (ZIF) Transceiver

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1

Page 9: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

The Concept of a Computer

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 99

Application software

Programs userwrites and runs

Hardware

Systems software

Operating systemcompiler

assembler

User

Page 10: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Software

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1010

Application software,a program in C:

swap (int v[ ], int k){int temp;

temp = v[k];v[k] = v[k+1];v[k+1] = temp;

}

MIPS binary machine code:

00000000101000010000000000011000 00000000000110000001100000100001 10001100011000100000000000000000 10001100111100100000000000000100 1010110011110010000000000000000010101100011000100000000000000100 00000011111000000000000000001000

Compiler Assembler

Application software

Hardware

Systems software

Machine instructions

MIPS compiler output,assembly language program:

swap;muli $2, $5, 4add $2, $4, $2lw $15, 0 ($2)lw $16, 4 ($2)sw $16, 0 ($2)sw $15, 4 ($2)jr $31

32-bit wordsstored inmemory

Page 11: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Binary Machine Code

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1111

00000000101000010000000000011000000000000001100000011000001000011000110001100010000000000000000010001100111100100000000000000100101011001111001000000000000000001010110001100010000000000000010000000011111000000000000000001000

Instructioncode

(opcode)

Encoded data

Page 12: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

The Hardware of a Computer

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1212

Control

Datapath MemoryCentral Processing

Unit (CPU)or “processor”

Input

Output

FIVE PIECES

Application software

Hardware

Systems software

Page 13: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Hardware Processes Machine CodeUser program is translated into binary machine code by compiler and assembler and is stored in memory.

Control unit reads program from memory, one word at a time (fetch operation).

Control unit deciphers the instruction bits of program word and configures datapath logic, which processes data and saves results in memory (decode and execute operations).

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1313

Page 14: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Digital Hardware of Computer

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1414

Memory

Control Finite State Machine

(FSM)

Datapath: Arithmetic logic and registers

Input/Output bus

Page 15: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

To Find Out More

J. Rogers, C. Plett and F. Dai, Integrated Circuit Design for High-Speed Frequency Synthesis, Boston: Artech House, 2006.

D. A. Patterson and J. L. Hennessy, Computer Organization & Design, the Hardware/Software Interface, Fourth Edition, San Francisco, California: Morgan Kaufman Publishers (Elsevier), 2009.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1515

Page 16: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

ExercisesIdentify radio frequency (RF), mixed (analog and digital) signal, and digital components in a communications system.

Which parts in computing and communications systems contain digital arithmetic logic circuits?

Where is the binary machine code stored in a digital computer?

What is the difference between sequential and combinational circuits? Which category does the control of a computer belong to?

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1616

Page 17: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

AnswersComponents of a communications system:

RF: Antenna, duplexer, filter, mixer, local oscillator.

Mixed-signal: ADC, DAC.

Digital: DSP.

Arithmetic logic is contained in DSP and datapath.

Machine code is stored in a memory.

Sequential and combinational circuits:

A sequential circuit contains memory. Its output is determined by the input and the content of the memory.

A combinational circuit contains no memory. Its output depends entirely upon the input.

Control of a computer is a sequential circuit.

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1717

Page 18: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

BinaryArithmetic

Switching

Theory

Semiconductor

Technology

Digital SystemsDigital Systems

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1818

Boolean

Algebra

DIGITALCIRCUITS

Page 19: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Next

Binary Arithmetic

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 1919

Page 20: ELEC 2200-002 Digital Logic Circuits Fall 2014 Introduction

Why Binary Arithmetic?Why Binary Arithmetic?

Fall 2014, Aug 18Fall 2014, Aug 18 ELEC2200-002 Lecture 1ELEC2200-002 Lecture 1 2020

3 + 5

0011 + 0101

= 8

= 1000


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