A bent fluorescent lamp for backlighting a display providing uniform illumination. One embodiment comprises a computer implemented method for rating the objectionability of specified digital content that comprises one or more discrete content items, wherein the method includes the step of moving the specified content to one or more filtering stages in a succession of filtering stages. A silicon nitride layer is then formed by nitriding the silicon layer. The condenser assembly base is positioned on the pad to cover the nuts on the stabilizer rods to make the nuts inaccessible once the condenser base is in place on the pad. The circuit is connected to a counter for counting a number of clock cycles that the event of interest is active and comprises logic for detecting deactivation of the event of interest and generating a duration end signal; logic responsive to the duration end signal for comparing a count value with a shadow value; and logic for updating the shadow value based on results of the comparing.