(Solved): 1. What is a Priority Encoder? 2. An 81 MUX has select inputs S2,S1 and S0 connected to ...

1. What is a Priority Encoder? 2. An $8\times 1$ MUX has select inputs $S_2,S_1$ and $S_0$ connected to $A,B$ and $C$ respectively. Data inputs are connected as: $I_1=I_2=0,I_3=I_7=1,I_4=I_5=D,I_0=I_6=D^{?}$. Find the Boolean function F(A, B, C, D) implemented by the multiplexer. 3. An $8\times 1$ MUX has select inputs $S_2,S_1$ and $S_0$ connected to $B,C$ and $D$ respectively. Data inputs are connected as: $I_1=I_2=0,I_3=I_7=1,I_4=I_5=A,I_0=I_6=A^{?}$. Find the Boolean function $F(A,B,C,D)$ implemented by the multiplexer.