| 摘要 |
PURPOSE:To perform a division at a high speed by executing the addition/ subtraction and a left-shoft operation just with hardware. CONSTITUTION:A dividend of (N+n) bits and a divisor of N bits are supplied through a divider. Then the divider delivers the quotient of (n) bits, the overflow of 1 bit and the residue of N bits. The plural units of general N-bit parallel adders/subtractors 12 are provided to the divider. The adder/subtractor 12 consists of an N-bit dividend input terminal A, an N-bit divisor input terminal, a 1-bit action command output terminal I, an N-bit arithmetic output terminal Z and a division overflow output terminal C to which the signal equal to the highest bit of the terminal Z is delivered. Then the adder/subtractor 12 performs the addition or the subtraction in response to the signal supplied to the terminal I. |
