MS DOS

MS DOS is a functional operating system where you type a command and it takes you to the function. Usually the F keys are used to tell the system a command, and move from page to page to access or change information. Windows has graphics and DOS does not. Windows also utilizes GUIs, which are graphical user interfaces... icons, buttons, arrows, pictures, etc... it is all graphical user interfaces... it is there for your benefit, so you can use the computer.