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Exercícios Prof. Péricles Álgebra Booleana Organização de Computadores ATENÇÃO o símbolo # representa o operador XOR 1 Desenvolva a tabela verdade para as seguintes expressões booleanas. a) A . B . C + A . B . C A B C {T1} A.B.C [T2 ] ____ A.B.C T1+T2 0 0 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 1 0 1 1 1 0 0 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 1 1 1 1 0 1 _ _ _ _ b) A . (C + B + D) (C + B + D)= [T1] A B C D _ B _ D [T1] A.[T1] 0 0 0 0 1 1 1 0 0 0 0 1 1 0 1 0 0 0 1 0 1 1 1 0 0 0 1 1 1 0 1 0 0 1 0 0 0 1 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 1 0 0 1 1 1 0 0 1 0 1 0 0 0 1 1 1 1 1 0 0 1 1 0 1 1 1 0 1 0 1 1 1 1 1 0 1 1 1 0 1 1 1 1 0 0 0 1 1 1 1 1 0 1 0 0 0 0 1 1 1 0 0 1 1 1 1 1 1 1 0 0 1 1 _ _ _ _ _ c) A . B . C + A . B . C + A . B . C [T1] [T2] [T3] A B C A.B.C _ A _ B _ C _ _ _ A.B.C _ _ A.B.C [T1]+[T2]+[T3] 0 0 0 0 1 1 1 1 0 1 0 0 1 0 1 1 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 1 1 0 1 0 0 0 0 0 1 0 0 0 0 1 1 0 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 1 1 0 0 0 0 0 1 _____ _____ _ d) (B) . (A + C) . ( A # B ) [T1] [T2] [T3] A B C _ A A+B A+C A+C _ A # B _ A # B [T1]+[T2]+[T3] 0 0 0 1 0 0 1 1 0 0 0 0 1 1 0 1 0 1 0 0 0 1 0 1 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 1 1 1 0 1 0 1 1 0 0 1 1 1 1 0 0 1 1 0 1 0 0 1 1 1 0 1 1 0 1 0 0 _ e) A . B + A . B [T1] [T2] A B _ B A . B _ A . B [T1]+[T2] 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 1 1 1 1 0 1 0 1 _________ _ _ f) A + (B + A . C) # D [T1] [T2] A B C D _ B _ D A.C _ B+A.C _ B+A.C A+[T1] _ T2#D 0 0 0 0 1 1 0 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 0 0 1 0 1 1 0 1 0 0 1 0 0 1 1 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 1 0 0 1 0 1 0 0 0 0 1 1 1 0 1 1 0 0 1 0 0 1 1 0 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 1 0 1 0 1 1 1 1 0 1 0 1 0 1 1 1 0 1 1 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 1 0 1 0 0 0 0 1 1 1 1 1 1 0 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 2 Considere os seguintes valores binários: A = 1011 B = 1110 C = 0011 D = 1010 a) X = A . (B # C) X=1001 ____ _ b) X = (A + B) . (C # (A + D)) X=0000 _____ _ _ c) X = B . C . A + (C # D) X=1001 _____ _ _ ____ d) X = ((A + B # D) . (C + A) + B) . (A + B) X=0000 _ _ e) X = A # B + C . B + A X=1100 3. Usando a tabela verdade identifique se as expressões abaixo são equivalentes: a) (X + Y) + Q [T1] X Y Q X+Y [T1]+Q 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 b) (X . Y) + Y [T1] X Y X . Y [T1]+Y 0 0 0 0 0 1 0 1 1 0 0 0 1 1 1 1 AS EXPRESSÕES NÃO SÃO EQUIVALENTES
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