| 摘要 |
PURPOSE:To speed up the calculation speed and to increase the accuracy, by utilizing the theorem in which all positive integers are represented with the combination not duplicated with the power of 3 and by constituting the multiplier used for digital units simply in circuit constitution. CONSTITUTION:The multiplier converter 10 generating the multiplication values 3<0>x, 3<1>x,... multiplying a series of power 3<0>, 3<1>, 3<2>... to the numeral 3 to the inputted multiplier x, and the data corresponding to the multiplicand y represented in the combination of the third power are memorized every multiplicand y, and the data corresponding to the multiplicand y inputted is outputted by the multiplicand converter 20. Further, among the multiplier from the output of the multiplier converter 10, the gate circuit 30 only passing through the multiplier selected with the output signal of the multiplicand converter 20 and the adder 40 outputting x, y of the multiplier and multiplicand through the addition of the multiplier outputted from the gate circuit 30 are provided, constituting the multiplier used for digital units. |
