Design And Construction Of A Digital Clock

Digital clock project is developed for the users to use a digital clock. The main parts of this project are set switch, astable unit and LCD display.

This Project Digital clock using 555 timer is an advanced digital calendar, which displays the time using LCD or seven segment display. This device display time in seconds, minutes and hours. The system has an inverter which is used to power the system.

The user can set the time, date and day using the switch. When the user sets the timings, the settings will be displayed in the LCD display. When the function key is turned on, the controller sends pulse to the LCD display to display the current time.

TABLE OF CONTENTS

COVER PAGE

TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWELDGEMENT

ABSTRACT

CHAPTER ONE

INTRODUCTION

1.1      BACKGROUND OF THE PROJECT

• PURPOSE OF THE PROJECT
• AIM/OBJECTIVE OF THE PROJECT
• SIGNIFICANCE OF THE PROJECT
• APPLICATION OF THE PROJECT
• SCOPE OF THE PROJECT
• PROJECT ORGANISATION

CHAPTER TWO

LITERATURE REVIEW

• HISTORICAL BACKGROUND OF REAL TIME CLOCK
• BASIC DESIGN OF 555 TIMER

CHAPTER THREE

METHODOLOGY

• INTRODUCTION
• SYSTEM BLOCK DIAGRAM
• OPERATION OF DIGITAL CLOCK
• SYSTEM CIRCUIT DIAGRAM
• CIRCUIT DESCRIPTION

CHAPTER FOUR

• .0 CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
  • CASING AND PACKAGING
  • ASSEMBLING OF SECTIONS
  • TESTING OF SYSTEM OPERATION
  • INSTALLATION OF THE COMPLETED DESIGN
  • COST ANALYSIS
  • DESCRIPTION OF SOME MAJOR COMPONENTS USED

CHAPTER FIVE

• CONCLUSION
• RECOMMENDATION
• REFERENCES

CHAPTER ONE

1.1                                                        INTRODUCTION

Digital clock is very useful projects for final year students. It has an Inbuilt Real Time Clock which tracks over the Real Time. It displays the time in hh:mms format. The time and date can be changed at any Time using the switch. The Real Time Clock is displayed on LCD display.

A digital timing circuit (digital clock) is something we use and depend on every day. The timing circuit used in this project will be entirely hardware based. It will consist of two timing signals, a 60Hz clock pulse used as the main timing signal (multiples of 60s) and a 1kHz clock pulse used for multiplexing a 7-segment display for the clock. The 60Hz clock pulse will be divided by sixty multiple times in order to provide a pulse for seconds, minutes and hours. These pulses will be counted, stored in memory registers and then displayed to show the current time.

1.2                                                   AIM OF THE PROJECT

The objective of this project is to construct a device that will display the time in seconds, minutes and hours. The time can be set using the switch.

1.3                                         SIGNIFICANCE OF THE PROJECT

You truly cannot be an organized human being unless you use a good timing system! And if you’re still someone who likes to keep all of their appointments, activities – I highly encourage you to consider tossing out the paper and find an electronic clock system that works for you.

One of the most beautiful things about digital clock is that they can be synced, so you can have your clock on your smart phone, your tablet, your laptop, as well as it can sync to your husband’s electronic clock and your kids’ clock. So no matter where you are- you can easily look up and see what your current appointments are for any given day. And the important people in your life can know the latest schedule and commitments too- without coming home and consulting the kitchen wall.

1.4                             ADVANTAGES OF DIGITAL CLOCK

• Even if there is power failure, this clock displays the right time using an inverter.
• Simplicity of the system.
• Accuracy of the system.

1.5                                             APPLICATIONS
Because digital clock is very small and inexpensive devices that enhance the popularity of product designs, they are often incorporated into all kinds of devices such as
• Cars
• Radios
• Televisions

1.6                                                 SCOPE OF THE PROJECT

Digital clocks typically use the 50 or 60 hertz oscillation of AC power or a 32,768 hertz crystal oscillator as in a quartz clock to keep time. Most digital clocks display the hour of the day in 24-hour format. A digital clock displays the time digitally (i.e. in numerals or other symbols). A clock generator is used to generate a clock, which is an oscillator that provides a square wave output. An oscillator circuit always has a feedback that makes the circuit oscillate. This feedback also provides parameters that can make a certain frequency. There are many different ways to make an oscillator.

1.7                          PROJECT WORK ORGANISATION

The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:

Chapter one of this work is on the introduction to a digital clock. In this chapter, the background, significance, objective limitation and problem of a digital clock were discussed.

Chapter two is on literature review of a digital clock. In this chapter, all the literature pertaining to this work was reviewed.

Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.

Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.

Chapter five is on conclusion, recommendation and references.