<p>In a signal processing package (200_3), a large OBP (221) which applies voltage to a processing device for processing data handled by the signal processing package (200_3) and supplies power in accordance with the size of the entire load of the execution of processing in the processing device and a small OBP (222) which generates and applies a subtracting application voltage for performing subtraction from an application voltage generated by the large OBP (221) and supplies power which is in accordance with the size of the load of the execution of processing in a part of the processing device and which is smaller than power supplied by the large OBP (221) to the part of the processing device are provided.</p>
