CIRCUIT FOR DIVIDING DIVIDEND BY 2n THROUGH THE USE OF ROUND-UP OR ROUND-DOWN APPROXIMATION

摘要

PROBLEM TO BE SOLVED: To provide a circuit for calculating the attribute degree of the antecedent part of a fuzzy rule determining the intersection of a membership function and an input by a simple and economical system. SOLUTION: A circuit for dividing a dividend by 2n through the use of round-up or round-down approximation includes a register 32 which includes a binary number to be devided and an adder 48 which is connected to the register 32, receives the (n+1) bit of the binary number to be divided to a highest- order bit by a first input A and the n-numbered bit of the binary number to be divided by a second input B, adds the first input A to a second input B and outputting a total value A+B. Then, the binary number divided by the total value A+B outputted by the adder 48 is the result of round-up and round- down approximation of the binary number divided by 2n.