A.用符號(hào)加絕對(duì)值B.二進(jìn)制反碼C.二進(jìn)制補(bǔ)碼D.無(wú)符號(hào)整數(shù)
A.加到最右邊一列 B.加到最左邊一列 C.舍棄 D.增加位長(zhǎng)度
A.8 B.127 C.128 D.256