梦见孩子哭>学生会演讲专利名称：COMPLEX MULTIPLIER
发明人：MAEDA KIYOHARU,KAWAGUCHI NAOHISA 申请号：JP19716390
申请日：19900725
公开号：JPH0488473A
公开日：
掐蒜苔
路过村19920323
专利内容由知识产权出版社提供
摘要：PURPOSE:To decrea the frequency of arithmetic for single complex multiplication from four times to three times and to shorten the total arithmetic processing time by altering the procedure of arithmetic. CONSTITUTION:Data A - D are inputted from 1st - 4th input terminals 1 - 4, a 1st subtracter 5 finds the difference A-B between the data A and B, and a 1st adder 6 finds the sum C+D of the data C and D. A 1st multiplier 7 finds the product (A-B)X(C+D) of the outputs A-B and output C+D, a 2nd multiplier 8 finds the product AXD, and a 2nd subtracter 9 finds the difference (A-
曹操观沧海>北京人口密度B)X(C+D)-AXB between (A-B)X(C+D) and AXD. Then a 3rd multiplier 10 finds the product BXC, a 2nd adder 11 finds the sum of (A-B)X(C+ D)-AXD and the output BXC of the multiplier 10 and the sum AXC-BXD is outputted to a 1st output terminal 13 as the real part of the product of two complexes and also outputted to a 2nd output terminal 14 as the real part of the complex number. Conquently, the frequency of multiplication is decread.
申请人：NEC CORP,NEC SHIZUOKA LTD
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四年级数学上>琴行装修效果图
