output signed [7:0] y;input signed [7:0] a;assign y=(a2);若a=10101011，则输出y等于：

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signed 10101011 输出

output signed [7:0] y;input signed [7:0] a;assign y=(a2);若a=10101011，则输出y等于：

A.00101010

B.10101100

C.11101010

D.10101111

正确答案：11101010

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