A touch-sensing liquid crystal display is provided and includes a display panel and a backlight module. A software program is executed on the multiprocessor computer to determine the number of current processors in the multiprocessor computer and the revision number of each processor. The base station generates a plurality of spread spectrum CDMA data signals using pseudo random chip code sequences. The predetermined length of the partial diffraction grating may be set in relation to a length of the resonant cavity, or in relation to a coupling coefficient i of the partial diffraction grating.