The Design, Construction And Test On A Two Station Simple Intercom System

The design, construction and test on a two station simple intercom system CHAPTER ONE: INTRODUCTION 1.1     INTRODUCTION / BACKGROUND Human to human communication is an essential part of our every day activities. Advances in communication technology have enabled any-time-anywhere connection between people. There are a wide variety of devices to communicate with family, friends and workgroup members who are distributed geographically. Cellular phones are used at the working places, stores etc. to call home to be reminded of what is needed or when one will be late to  work, meeting etc. The purp…