Man’s invention, when counted might beat the stars in the sky. We have such a lot to lead our life easier. Of all those products, the success has been tasted only by those products, which are simple to operate. The simplicity here refers to the user friendliness. Even though the products have very high efficiency and usage, it is not preferred by the people when it is not user friendly. The best example is the “Microsoft windows”. All the computer experts would know that UNIX is the efficient and effective operating system available. But the OS found in every home is “Microsoft windows” . the reason is the user friendliness.