If someone really needs to do something, he will find a way of doing it. As mankind progressed people had left various felt various needs and challenges. To protect himself from cold and wild beasts, man made fire. The necessity to print books in large numbers made Gutenberg invent the printing machine. The ability to think of new and clever ideas or inventions gained momentum in the last hundred years. The last fifty years had seen tremendous strides in the field of computers with computers being on an increasing scale by the scientific, business and Government sectors. With humanity’s need for more innovative devices growing day by day, billions of dollars are being pumped in by the large corporate houses to develop these devices. Each invention is throwing up new challenges and the best brains the world over are coming together to better the existing inventions and face the challenges of the future.

"Necessity... the mother of invention." -Plato.

 So its an effort to know what the necessities are and to come up with an acceptable solution to it.