The apparatus and method of the present invention relates use of a warm and dry atmosphere in electronic component storage areas. These control packets are then used to monitor a streamingconversational-class data session to thereby detect when the mobile data flow has been dropped by a corresponding mobile network. A silicon wafer is prepared to rearrange inputoutput terminals of the chip and passively align an optical fiber with the optical device chip. Therefore, the scientific phenomena evaluation apparatus is appropriate as an educational tool for scientific experiments. The latter portions are located rearward of positions laterally corresponding to a barycentric position of the payload in a longitudinal direction of the body. This makes it possible to implement a transflective type liquid crystal display with excellent visibility regardless of whether an external light or internal lighting source is used.