There is provided a liquid crystal display apparatus having a high contrast ratio in an oblique direction and small color change depending upon a viewing angle. Vertical and side-shift blade set-up and functions are accurately controlled. In the wireless data communication system, a master device, and a slave device, including wireless data communication part transmit and receive data packets between the devices using a synchronized data communication protocol. This slot can have parallel walls or can be shaped to match the form of a particular seam. At the remote data storage system, a load balancing program may be executed to programmatically assign a given client device to a subset of remote data storage devices in response to obtaining the metadata about the given client device. The torque received by the drive shaft is principally used to propel the boat.