66. Demultiplexer

How do you plan to solve it?

module demux1to4(input d,input [1:0]s,output[3:0]y);
assign y[0]=(s==2'b00)?d:1'b0;
assign y[1]=(s==2'b01)?d:1'b0;
assign y[2]=(s==2'b10)?d:1'b0;
assign y[3]=(s==2'b11)?d:1'b0;
endmodule