A transformable chair equipped with a movable deck comprises a frame, a movable unit and two chair units. Each one of the nodes comprises at least one rendering device. A pixel unit corresponds to one of the plurality of data lines and one of the plurality of scan lines. The turbine will adjust the pitch of its blades automatically as the air flow inside the pipe changes direction, The air flow will change the pitch of the blade, because the blade is mounted on a shaft through ball bearings. The fabric articles are transferred to a water extraction device that enables removal of excess water. The semiconductor device having an amplifying transistor and a biasing transistor and the driving method thereof, wherein an electric discharging transistor is provided and pre-discharge is performed.