An information processing apparatus is configured to measure a Doppler shift in the frequency of a radio wave from a GPS satellite and a pseudo-distance between the satellite and a measuring point by using the signal therefrom, and calculate the position of the measuring point by using the Doppler shift combined with the pseudo-distance . The main body has a recessed region including a relief region in the front portion. The total number of dies manufacturable on the wafer at the first position is determined. The suspension includes a first air spring associated with the first arm and a second air spring associated with the second arm.