MULTIPLICATION ACCUMULATOR

摘要

PURPOSE:To decrease the circuit scale of a multiplication accumulator and to reduce greatly the chip size of the circuit when the circuit is converted into an integrated circuit IC, by using a partial product generator and a single stage of an accumulation adder to form an accumulation adder for products. CONSTITUTION:An output 2 of a partial product generator is delivered from a partial product generator 1 for a multiplicand X and a multiplier Y. While an output 4 of an accumulation adder is delivered from an accumulation adder 3 which performs the accumulation addition for the partial production generating output. Thus the accumulation addition value of the product can be obtained just by means of the generator 1 and a single stage of the adder 3 without using an adder for partial products which obtains a partial product through addition. This can reduce the circuit scale of a multiplication accumulator.