A method and apparatus for reducing switching noise in a system-on-chip integrated circuit including an analog to digital converter provides for reduced noise in the ADC conversions. The power transistor has a control electrode coupled to an input terminal for receiving an RF input signal, a first current electrode for providing an RF output signal at an output terminal, and a second current electrode coupled to a power supply voltage terminal. The server computer determines whether the client computer is able to generate graphics using the higher-level graphics commands or generates graphics using relatively lower-level graphics commands. In the first position the closure mechanism is configured to permit movement of the dipper door away from the dipper bottom.