A robot an automatic machine that does the work of a human. Robot come in many shapes and size and they have many deferent abilities. Basically a robot is simply a computer with some sort of mechanical body designed to do a particular job. Usually it is able to move and hand one or more electronic senses. These sense are not nearly as powerful of our own sense of sight and hearing. However, scientists and engineers are working hard to make them ses, hear and respond to the environment around them.
Why do we need robot? They are hard working and reliable. They can do diangerous work or work that is very boring and tiring for human. They can work around the clook without complaining rest, Food or vacation. And they can go places that humans connot such as the surface of mans, deep under the ocean or inside the radioactive parts of a nuclear power plant.