| 摘要 |
PURPOSE:To make good convolutional operation in time area and enable multifarious use by providing a cumulative adding device, a selecting device, a ROM address counter, a RAM address counter and storing devices. CONSTITUTION:The cumulative adder 41 multiplies a digitalized coefficient data string and a multiplicand data string and makes addition, and connected in parallel to the first ROM43 and the second ROM44 which store a peculiar coefficient data string through a ROM selector circuit 42. Input terminals AD0-AD3 are connected to the output terminal of a ROM address counter 45, and address signal of a ROM47 is formed by an address counter 48. By providing the adder 41, the circuit 42 and the counters 45, 48 to constitute an i circuit and by using the first ROM43 and the second ROM44 selectively, convolutional operation can be changed according to use or preference. Thus, good convolutional operation can be made in time area, and can be used multifariously. |
