Microsoft's cash cow celebrates three decades of PC dominance On November 20, 1985, Microsoft unveiled its graphical operating system. Windows 1.0 offered a new way to navigate a PC, clicking a cursor on various boxes rather than scrolling through lines of text in order to navigate data and applications. While arguably less efficient than a command line, the graphical user interface (GUI) was more intuitive and easier for novice users to manage. Running Windows 1.0 required a PC running DOS 2.0 as well as two double-sided floppy disk drives, 256K of memory, and a new-fangled device known as a "graphics...