A reprogrammable metal-to-metal antifuse is disposed between two metal interconnect layers in an integrated circuit. A first stereoscopic adjustment on the first pair of images is carried out to obtain a second pair of images. The server is adapted to receive an incoming conference request via a data message and coordinate acceptances to the request. The through-hole interconnection has another insulating layer formed in the via hole and a conductive layer formed thereon. Thus, the seat tube of the bicycle is clamped between the two clamping blocks of the respective clamping unit, so that the bicycle is fixed by the respective clamping unit rigidly and stably without detachment. The lens module is covering on the hole and mounting on the top surface of the substrate to enclose the optical sensing chip and the bonding wires.