An apparatus for line drawing using a plurality of pixels to display a line, including a first parameter generating module, a second parameter generating module, a storage module, a retrieving module, and a calculating module. The process includes the steps of selecting at least one piece of material having at least one planar surface and opposed side edges, mechanically forming grooves along at least one of the opposed side edges of the piece of material, and adjoining multiple pieces of material so formed to create a surface of an article of furniture that has a distressed appearance. The helical antenna elements of the first set are interconnected in respective top ends of the elements at the top of the antenna. The keyboard interface includes a data pin, a voltage pin, and an idle pin.