A scannable storage circuit is provided that has a separate a scan output buffer for driving the scan output. The device also includes a gas delivery line comprising a manifold with a plurality of outlets in fluid communication with each other. The touch screen system requires a reduced number of shielding and isolation layers to be deposited upon the transparent substrate, partially because the touch screen system utilizes a bezel associated with an underlying display to provide shielding against electromagnetic radiation emitted by the display. The retainer device is then withdrawn from the well so as to create a substantially uniform film of the agent along the inner surfaces of the well casing. The crucible platen is provided with a chamber for the exothermic material which when ignited forms molten metal which flows through a tap hole into the weld chamber. The method includes rotating a shaft around a rotation point to drive a piston within a cylindrical volume in a periodic manner, modifying the stroke length of the piston, and moving the center of the shaft relative to the cylindrical volume such that a change in an unswept volume or compression ratio is controlled.