Learning the basics of Windows OS Windows has become one of the premier operating systems in the world but it was not the case since the start. It has evolved for many decades to become the best operating systems in the world. In order to learn the basics of the Windows operating system; you should learn the history and the roots of this system. Windows is the mixture of simple text based system and also has the traces of graphical interface. The main reason behind the success of the windows operating system was that it was very easy to use and learn. With the introduction of personal computers; there was a huge demand of a good operating system and this is where windows operating system came into being. In the start; the windows was launched as DOS; also known as disk operating system.