Embodiments of the present invention provide a method, system and computer program product for managing requirements planning in a collaborative computing environment. The system may comprise mounting flanges that may have threaded hubs or the system may further comprise an electric device having front and back shells moveable on a track in response to depression of a button allowing for movement of the back shell so that the electric device may be mounted having its face coplanar with a front wall surface. In addition, a capacitor formed between a gate electrode and an output electrode of a TFT compensates for increasing the electric potential of the gate electrode of the TFT, and a larger load driving capability is obtained. The magnetic track includes a plurality of magnetic domain regions and a magnetic domain wall region formed between neighboring magnetic domain regions. Transistors of the backlight luminance sensors and transistors of a pixel portion are formed on the same substrate in the same process.