A device includes a storage unit configured to store programs; a start-up status storing unit; and a start-up management unit configured to perform a start-up process for each of the programs during start-up of the device, and record information indicating status of the start-up process in the start-up status storing unit in association with identification information of each of the programs. An electrically energizable phosphorescent screen behind the indicia serves to illuminate the numbers at night. The cast iron panels each include a boss and an opposed recess disposed on opposite sides thereof for interconnecting adjacent panels by cooperating hook portions formed on the boss and in the recess of the adjacent panel, respectively.