A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. When a prescribed condition is satisfied, if the abnormality detecting device 600 does not detect the abnormality of the low frequency oscillator, a switching device 10a exchanges the clock pulse for operating a CPU 10 from a first clock pulse P1 to a second clock pulse P2 so that the CPU 10 is shifted to a low power consumed state. When the most significant bit is brought to \u201cH\u201d, the respective input signals are held as analog signals and compared with each of reference voltages produced corresponding to a digital signal by a DAC. When the arbitrary point on the front end face is located at a center of the front end face in the track width direction, the length of the arbitrary cross section is smaller than that when the arbitrary point is located at the first end and that when the arbitrary point is located at the second end. The stitchless textile engagement techniques can provide a smooth, non-bulky, and breathable joint that does not require thick layers of textile material in contact with or adjacent the wearer’s foot.