An integrated digital device and method for selecting functions are provided. A button is positioned adjacent to a display unit for selecting functions according to a mode change. Icons are displayed for the selected function via the display device. The integrated digital device includes a display unit for displaying multimedia content and at least one of function selection icon for the multimedia content, a function selection button unit disposed adjacent to the displayed function selection icons, and a mode dial, which is disposed on one side of the device adjacent to another side where the display unit is disposed, and which receives an input of one of a plurality of modes as the mode dial is rotated at a regular interval.