What Is Microsoft Windows?
Windows is a graphical operating system developed by Microsoft. It was first released in 1985 as a pre-release version for the IBM PC. Windows NT was released in 1990, and Windows 2000 was released in 2001. Windows XP was released in 2003, and Windows Vista was released in 2007. Windows 7 was released in 2009, and Windows 8 was released in 2012. .. Windows is a series of proprietary operating systems developed and marketed by Microsoft....