ARITHMETIC CIRCUIT AND FLOATING-POINT MULTIPLICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To speed up the operation of the arithmetic circuit by improving the operation of a data supply means which supplies data used for operation to a computing element. SOLUTION: A flip-flop array 13 supplies data C and data D as the arithmetic result of a 1st adder 11 to a 2nd adder 12. A clock supply means 14 delays an external clock CLK by a delay element and then supplies it to the respective flip-flops of the flip-flop array 13 so that the clock is supplied to the flip-flops on the low-order bit side and relatively early (short delay time) and to the flip-flops on the high-order bit side relatively slowly (long delay time). Consequently, the 2nd adder 12 is supplied with the low-order side bits of the data earlier than the high-order bits, so speed advantages of the low-order bits to the high-order side bits of the data supplied to the flip-flop array 13 are utilized to shorten the operation time.