An information processing apparatus for autonomously controlling the supply of electric power to each functional unit constituting said apparatus includes a management part for controlling the supply of electric power to each functional unit; an execution control part for issuing an instruction concerning an operation, if the operation is required in the self apparatus; and an instruction recording part for recording an instruction issued by said execution control part; wherein said management part stops the supply of electric power to said execution control part and starts the supply of electric power to said functional unit concerning the instruction issued by said execution control part, if said execution control part ends issuing the instruction, whereby said functional unit executes the instruction recorded in said instruction recording part.