Microsoft Windows is an operating system which are developed, marketed, and sold by Microsoft. In computing, a window is a graphical control element. It consists of a visual area containing some of the graphical user interface of the program it belongs to and is framed by a window decoration.The Windows is basically rectangular in shape and it can be overlap with the area of other windows. It shows an output of and can allow the input to one or more processes. The Text-only displays can also supports the windowing as a way to maintain various independent display areas such as multiple buffers in Emacs. In general, the text windows have been controlled by keyboard as well as mouse. An operating environment named Windows has been introduced by Microsoft on November 20, 1985. It is a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs).