A line card connectable to a backplane connector includes a connector. In one embodiment, a method may comprise detecting a change to a database. The first conveyance device has conveyance units that carry and convey the articles. Meanwhile, since the gate electrode in the peripheral circuit region has a gate length longer than that of the gate electrode in the memory array region, the thickness of the gate insulating film just below the center thereof is almost equal to that before the re-oxidation process.