化下列二进位制数为十进位制数:
(1)101101 (2);(2)11101010 (2);(3)100100100 (2).
化下列二进位制数为十进位制数:
(1)101101 (2);(2)11101010 (2);(3)100100100 (2).
【正确答案】:解(1)101101 (2) =1×2 5 +1×2 3 +1×2 2 +1×2 0 =45.
(2)11101010(2)=1×27+1×26+1×25+1×23+1×21=234
(3)100100100(2)=1×28+1×25+1×22=292.
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