The man-made machines are the equipment which performs tasks as per the order are known as the robots. These machines are highly complex and perform difficult tasks similar to humans. They are made up of the elements which are composed of atoms and not cells. They have mechanical structures which work similar to the body parts of the humans and easily perform the tasks which are done by humans. These machines have made it easy to perform the heavy load working in the industries. So, the robots and the computers made by man are considered as the most important resources.