4-1xuanze.txt

只要或上有事件发生

module MUX4x1 (Z,D0,D1,D2,D3,S0,S1);
output Z;
input D0,D1,D2,D3,S0,S1;

and (T0,D0,S0bar,S1bar),
(T1,D1,S0bar,S1),
(T2,D2,S0,S1bar),
(T3,D3,S0,S1),

not (S0bar,S0),
(S1bar,S1);

or (Z,T0,T1,T2,T3,);
endmodule