This book is focused on the "Rail Way Gate" is controlled by human resource till now in our country. So some man-power is engaged for this non-productive work. Sometimes for some unfortunate signal transformation mistakes, citizen fall immeasurable damages. From the sense of humiliation development and save our resource by the gift of modern electronics. I take the research about "Automatic Rail-way gate control" by using Programmable Logic Controller (PLC). PLC is the devices which give us a vast option of process and procedure to make many works by using a single device. PLC can works in...