An ergonomic desk comprises a work-surface with a cut-out opening having a ladder-like frame positioned therein. The improved coupling elements include a flowing liquid medium disposed between the transparent plate and the sensing element. The plurality of data line control switches connects different groups of the data inputoutput terminals in different ones of the chips to respective groups of the package terminals in a test mode. A swim lane represents an organizational unit, and the process blocks located within the swim lane are associated with that organizational unit.