A computing device includes a housing and a display assembly having a screen. The support assembly includes a guide that is mountable on the roof and a base that is adapted to engage said guide and which is capable of movement along said guide while remaining engaged therewith. A cleaning process, a metal layer forming process, and subsequent processes can be performed in situ by using the two chambers, thereby the attachment of the unnecessary impurities and the formation of the oxide can be prevented and the optimization of the process can be accomplished. A block of instructions is associated with at least one tag representing one point in time at which it has to be executed. A pair of mounting tabs are fastened to the frame by respective compliant beams.