In our daily routine we launch multiple computer system which make our life easier, better and comfortable, without knowing how wonderful, sophisticated and complex are the technology behind it .

Make a phone call, a bank transaction, a medical examination, to start a car, home bookkeeping, write a simple letter, design an integrated circuit, visiting a museum virtually, get the road map of a country, to predict the time that will make your next vacation or solve a problem is known as hard as the sequencing of DNA, are made possible by the great development that have computing and communications in the past five decades.