19 A multiplexer is used to accept data from many input sources for transmission over a common shared line as shown in Figure CI Dengan Laptop Sound card MUX Som om Figure 319 i) When A=1, B=1, which of the inputs is present in the output Y. [0.5) ii) What must be the value for A and B so that Laptop sound card will be selected? [0.5) iii) Construct the truth table, write the logic function and draw the logic diagram of the given [4] multiplexer 20 For the given Boolean expression Y-A.B.C.D.A.B.C.D.A.B.O.D-A.B.C.B.A.B.C.D.A.B.C.D.A.B.C.D.A.B.CD i) Evaluate the simplified expression by constructing K-Map ii) Build the truth table for the given logic expression. [2.5] [2.51