| 摘要 |
PURPOSE:To simplify the constitution of a calculating device by minimizing the bit length of the output date on a divider, a multiplier, a subtractor or an adder which perform the division, the multiplication, the subtraction or the addition respectively between the 1st and 2nd input data. CONSTITUTION:The date stored in an input register 1 are supplied to a left shifter 15 which shifts the data to the left by one bit, and the output data on the shifter 15 are stored in a 1st temporary register 16 having the 17-bit length. The data stored in an input register 3 and the register 16 are supplied to a divider 6, and the quotient data, i.e., the dividing result of the divider 6 are stored in a 2nd temporary register 17 of 17-bit length. The data stored in the register 17 are supplied to a right shifter 18 and shifted to the right by one bit. The output data of the shifter 18 are stored in a 3rd temporary resister 19 of 16-bit length. Then the data stored in the register 19 and the least significant bit value of the register 17 are supplied to an adder 13. |
