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【单选题】
超前进位加法器74LS283当被加数A=0110,加数B=1101,低位进位Ci=1时,则求和的结果是( )。
A.
S=1000,Co=0
B.
S=1000,Co=1
C.
S=1000,Co=0
D.
S=0100,Co=1
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