A business application integrates a company’s internal business systems with an e-commerce web site, so that company personnel can manage their business with a business application that seamlessly exports relevant, up-to-date data to a web site designed to interact with customers across the Web. A cartridge memory stores information of a remaining toner amount measured previously. At the four removal positions, doors are present that open automatically and through which ejector pins then move the playing cards outside. The transceiver adjustably delays the input signal so that the residual echo component peaks occur at times other then when the received signal is being digitized, thereby minimizing the influence of the echo component peaks on the data sequence. Further, the geometric DAC architecture requires less real estate than the simpler more conventional approach, is easy to expand because it is modular, and generates an output current that is always monotonic, regardless of errors in transistor sizes and PVT variations.