计算机为什么用二进制计数法呀

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select * from tbl_Articles WHERE ArticleID=2504785 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2504785 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2504785 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1101053,1063097,1041719,1412556,1089251,2741969,2488473,2922345,1096062,638379,1110155,1072673,3355576,1124909,3167107,2890667,1123999,2196337,1775995,3094035,3394598,1131993,2175073,2913676,1580184,212507,107421,2838358,2175065,1070672) ORDER BY field (ArticleID,1101053,1063097,1041719,1412556,1089251,2741969,2488473,2922345,1096062,638379,1110155,1072673,3355576,1124909,3167107,2890667,1123999,2196337,1775995,3094035,3394598,1131993,2175073,2913676,1580184,212507,107421,2838358,2175065,1070672)