In a system, such as in a digital copier, for classifying image data derived from an original image, the image data is classified by type. The compounds according to the invention are suitable especially as sun protection agents in cosmetic, pharmaceutical and veterinary medicine preparations. Additionally, the gate length of the reference transistor can be shortened to effect the hot carrier injection degradation. Thus, a semiconductor device where fluctuation in electrical characteristics is small and reliability is high can be manufactured. Upon testing, probe pins are brought into contact with the odd-numbered test electrode pads to conduct testing.