Most computer applications operate from within an application window, but this was not always the case. Early computer programs were managed through the use of a command line interface, a method of control that is still available on modern computers. On a Mac computer, the command line interface comes in the form of the Terminal application. On a Windows 7 computer, the Terminal equivalent is the Command Prompt program.
Click the "Start" button to open the Start menu.
Open the "All Programs" menu, followed by the "Accessories" option.
Select the "Command Prompt" option from the "Accessories" menu to open a command-line interface session in a new window on the computer.