17. Binary to Gray Code Converter

Code

module bin2gray4(
    input  [3:0] bin_in,
    output [3:0] gray_out
);
assign gray_out[3]= bin_in[3];
assign gray_out[2]= bin_in[3]^bin_in[2];
assign gray_out[1]= bin_in[2]^bin_in[1];
assign gray_out[0]=bin_in[1]^ bin_in[0];
endmodule