Search may be performed on a user device, such as a handheld electronic book reader device. The gate lines cross the data lines. The frame rate conversion circuit is configured for reducing a bit number of signals. The first region includes a first portion having a first width and the second region includes a second portion having a second width. The power conversion unit is used commonly in both the first and second power transferring means and used for transferring the power between the battery and the first power supply section and for transferring the power between the battery and the second power supply section. Thereafter, hub is placed on a tool such that a plurality of pins on the tool extend through the plurality of openings in the flange and engage the outer race of the bearing.