module decoder3to8(
input [2:0] s,
output reg [7:0] y
);
always @(*) begin
y = 8'b0;
case (s)
3'b000: y = 8'b0000_0001;
3'b001: y = 8'b0000_0010;
3'b010: y = 8'b0000_0100;
3'b011: y = 8'b0000_1000;
3'b100: y = 8'b0001_0000;
3'b101: y = 8'b0010_0000;
3'b110: y = 8'b0100_0000;
3'b111: y = 8'b1000_0000;
endcase
end
endmodule