1. An information processing apparatus having a plurality of functions, comprising: a display unit; a display control unit that causes said display unit to display the plurality of functions in a manner being selectable; an input unit that inputs information on at least one function selected from the plurality of functions via a screen displayed by said display unit; and a power supply control unit that controls power supply relating to the at least one function input via said input unit, based on the information on the at least one function.