Communication between processors and IO communications processes is facilitated. Another orthodontic adhesive having a WC ratio of at least 10, 12, 14 or 20, includes a curable resin monomer component; a curing initiator system; and filler. 8 wt % with aromatics and iso-paraffins as major components. The voltage-generator generates an electrical current as the spindle moves, and sends the electrical current to an electronic display interface. Beam blanking can be performed using a gating signal to decrease beam blur during writing on the wafer.