A furniture assembly and its associated method of use. Thereafter updating the circuit information and delay information of the integrated circuit at an information update portion to re-test the timing. The driving unit independently controls an exposure time of a first group of the plurality of first photoelectric conversion elements and an exposure time of a second group of the plurality of second photoelectric conversion elements. Earth-boring tools include one or more such PDCs. The control area provides powers to the routing area power-supply lines. The electric fuse has a juxtaposed region in which a plurality of straight line portions are juxtaposed with each other by folding the wide interconnect, and the narrow interconnect has a narrower width than that of the wide interconnect, and, at the same time, is connected to the wide interconnect outside the juxtaposed region.