A powered test-tube agitation device includes a small plate having a rest for a test tube to be agitated and operated in agitation by a powered mechanism. For this purpose, the original image is divided based on the size of the original image and the size of a sheet such that each of a plurality of image portions obtained by division sets in the predetermined size. A vehicle data communications protocol converter is preferably connected to the plurality of electrical conductors for converting a first data communications protocol associated with data communications along the plurality of electrical conductors to a second data communications protocol such as a local-area infrared or an RF data communications protocol. Processing of the interrupt can be executed by the one load module even during the rebooting of the operating system.