In one aspect, there is provided a digital logic circuit that comprises circuitry for generating a new iteration xn+1 of the reciprocal square root of A from the previous iteration xn by multiplying the previous iteration xn by the number A; multiplying the result of by the previous iteration xn; subtracting the result of from 3; and multiplying the result of by half of the previous iteration xn. The surface acoustic wave device includes at least one IDT, which is composed of a metal or an alloy having a density higher than that of Al and is formed on a 25\xb0 to 55\xb0 rotation-Y plate X propagation LiTaO3 substrate, and a SiO2 film disposed on the LiTaO3 substrate so as to cover the at least one IDT for improving the frequency-temperature characteristic. S bonding pad is connected to a S bus line via resistor RS, and VGA bonding pad is connected to VGA bus line. A plurality of spokes each have a threaded end at a first end thereof so as to be threadedly connected to the threaded hole of one of the nuts.