CHAPTER ONE
INTRODUCTION
1.1 Background
A clock is an instrument used for indicating and maintaining the time and passage thereof. The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic words clagan and clocca meaning “bell”. For horologists and other specialists the term clock continues to mean exclusively a device with a striking mechanism for announcing intervals of time acoustically, by ringing a bell, a set of chimes, or a gong. A silent instrument lacking such a mechanism has traditionally been known as a timepiece. In general usage today, however, a “clock” refers to any device for measuring and displaying the time which, unlike a watch, is not worn on the person.
In this project, I shall be designing a 24 – Hours digital clock using MSI.
1.7 Objectives
The objective of this project work is directed towards the following areas:
1. To design and implement a 24 – Hours Digital Clock using MSI
2. To be able to develop a complete clock that can be used for any other timing purposes.
1.8 Justification
If this prototype is fully developed will be very useful in many areas such as:
a. This system will serve as a prototype that will encourage local manufacturers to develop interest in microcontroller based designs
b. It can be a substitute for home and industrial use
c. It can be used by schools further research purposes.
1.9 Scope of the Project
This project will feature the design of digital clock using AT89S52 and program written in basic language. The output will be implemented using LCD. Push buttons will be used to implement the input.
1.10 Constraints
One the major constraint of this work was finance. Another like it was in availability of the required information.
1.6 Project Report Organization
This report is organized into six chapters. The first chapter takes care of introduction. Chapter two surveys the literature review of this work. In chapter three, the project analysis was done. The input, processing and output modules are critically analyzed.
In chapter four, system implementation was carefully done. Chapter five takes care of Testing and Implementation. Finally chapter six closes up with summary and conclusions.