A light-emitting diode lamp includes a light engine, a power assembly, and a heatsink. These objects may be combined with each other via their common interfaces to form combination objects, and such combination objects may in turn be further combined with other objects and combination objects to form objects of increasing complexity which function as complete programs. When a secondary system is within a local wireless coverage area of the portable media player, the proxy information for the media files, or a subset thereof, is provided to the secondary system. In a preferred embodiment, also further parts of the conducting plate situated at the location where the device is to be sawn, cut or broken remain uncovered by the mask and are removed during etching. One of the corrections is selected that improves the error characteristic of the original netlist. The transition delay of the divided clock signal is adjusted by reducing the steady state amplitude of the divided clock signal.