Artificial intelligence is the branch in Computer science which aims to develop machines to act the way humans work with his intelligence. The word artificial Intelligence was coined by John McCarthy in 1956 at Dartmouth College. Artificial intelligent computers will have the ability to write programs by themselves if they encounter a difficult circumstance. They also have the ability to try various programs and method to achieve their goal. If they encounter a mistake then it will store it in memory and they will never make the same mistake again. A great service is that the mistake they make will be send to all other AI computers linked to them so that they will also not make that same mistake.