2進数を8ビットで表したときに、下位4・・・に関する記事
質問
2進数を8ビットで表したときに、下位4ビットを0000にする方法は？？という問題が分かりません。 どなたか教えてください。 ちなみに答えはF0でANDらしいです。
回答
1AND1=1 0AND1=0 0AND0=0 1AND0=0 というわけで１でも０でもAND0をすれば0になり、AND1すると元のままだからです。 したがって0にしたい下位は0000、変えない上位は1111 AND F0です。
出典：Yahoo!知恵袋
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