An equipment rack including front and back doors is configured with fans for air cooling enclosed electronic devices in both doors. In at least one embodiment, the present invention is intended to control the sleepingwakefulness of processing elements, as necessary, to maintain a preferred level of power utilization in the platform. Each of the classifications indicates a different installation state. The windings are so configured that the number of phases and the number of poles can be dynamically adjusted. A receiver couples the touch screenkeyboard and the projector.