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                # 原碼,反碼,補碼 說明: 在計算機內有符號數有三種表示法:原碼,反碼,補碼。原因就是因為整數分正數和負數 所有數據的計算都是采用補碼進行的。 二進制的最大位:0是正數,1是負數 * 正數:三碼一樣 * 負數:反碼=》》符號位不變,其它的取反,補碼=》》在反碼的基礎上加1 5的原碼:00000000 00000000 00000000 00000101 5的反碼:00000000 00000000 00000000 00000101 5的補碼:00000000 00000000 00000000 00000101 -3的原碼:10000000 00000000 00000000 00000011 -3的反碼:11111111 11111111 11111111 11111100 -3的補碼:11111111 11111111 11111111 11111101
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