DESIGN AND CONSTRUCTION OF ELECTRONIC SCROLLING MESSAGE DISPLAY BOARD WITH BACK UP BATTERY

ABSTRACT

This report is aimed at explaining the Design and Construction of electronic message display board. It enumerate why we need electronic scrolling message display which is primarily for passage of information across the staff, students and public. It also includes the aim and objectives, advantages and disadvantages with a well narrated literature review and timeline that relates to digital display and its current trends in digital world.

Adequate coverage was given to mode of operation, result and discussion on the project work including Conclusion, Recommendations for further study, Bill of Engineering Measurement and Evaluation (BEME) and Reference.              

TABLE OF CONTENTS

Title Page…………………………………………………………………i

Certification……………………………………………………….......ii

Abstract…………………………………………………………………iii

Dedication……………………………………………………………..iv

Acknowledgements……………………………………………..…….v 

Table of Content………………………………………....................vi-ix

List of figures………………………………………………………….x-xi

CHAPTER ONE

1.1 Introduction…………………………………………................1

1.2 Problem Statement ………………………………………….

1.3 Motivation……………………………………………….............

1.4 Aim……………………………………………………………………..

1.5 Objectives……………………………………………………………

1.6 Research Methodology…………………………………………….

CHAPTER TWO

2.0 Literature Review………………………………………………10

2.1 Traditional/Conventional Billboards……………………………….

2.2 Billboard Advertising………………………………………………

2.3 Digital Signals………………………………………….18-19

2.4 DIGITAL BILLBOARD

2.5 ELECTRONIC LED BILLBOARDS 

CHAPTER THREE

3.0 System Design, Methodology and Circuit Analysis 

3.1 System Design.

3.2  THE HARDWARE SECTION.

3.2.1 THE POWER SUPPLY UNIT.

3.2.1.1 LM7805 VOLTAGE REGULATOR.

3.2.2 THE INPUT UNIT.

3.2.2.1 MAX232.

3.2.2.2 RS-232.

3.2.3 THE CONTROL UNIT.

3.2.3.1 THE AT89C51 MICROCONTROLLER.

3.2.3.2.1 MEMORY ORGANIZATION

3.2.3.2.4 REGISTER BANKS.

3.2.4 DISPLAY UNIT.

3.2.4.1 LIGHT EMITTING DIODES (LEDS).

3.2.4.2 LED-Display-Unit-Module

3.3 DESIGN DATA AND CALCULATION.

3.4 SOFTWARE/FIRWARE DESIGN SECTION.

3.5 HOW THE ENTIRE SYSTEM SEND DATA INPUT INTO   MICROCONTROLLER.

3.6 HOW THE MICRO CONTROLLER WORK WITH THE ENTIRE SYSTEM

CHAPTER FOUR

4.0 System Implementation, Testing and Result.

4.1 System Implementation.

4.1.1 HARDWARE IMPLEMENTATION

4.1.2 SOFTWARE/FIRMWARE IMPLEMENTATION

4.2 TESTING

4.3 RESULT (THE PERFORMANCE ANALYSIS).

CHAPTER FIVE

5.0 Conclusion………………………………………………………….54

5.1 Recommendation………………………………………………….54

5.2 Bill of Engineering Measurement and Evaluation(BEME)………………………………………............56

5.3 Reference………………………………………………………….57

Appendix………………………….. ..........................................58-59