A multi-purpose wheeled carrier that includes various surfaces, recesses and unique features for providing alternative methods of containing, sorting and transporting random materials of various sizes, bulk and weight. The imaging device preliminarily images a workpiece. The firing sequence module selects a first set of M cylinders of an engine to activate, selects a second set of N cylinders of the engine to deactivate, and selects a firing sequence to activate the first set of M cylinders and to deactivate the second set of N cylinders. It thereby uses the pressure of the thighs of the user to hold it in place. Thereby, the damages of the electron-emitting device by the inert gas are prevented, and the life of an image display apparatus is aimed to be elongated.