Lab5

module mod10(input clk, reset, output reg clk_o,output reg [3:0]ledQ,output a,b,c,d,e,f,g,co);
 reg [30:0] div;
 reg [2:0]Q;

 assign co = 0;
 LED_Decoder u0(Q, a, b, c, d, e, f, g);

 always @ (posedge clk_o or negedge reset)
   begin
    if (!reset) Q<=0;
    else if (Q==6) Q=0;
    else Q <= Q + 1 ;
  end

 always@(Q)
 begin
        ledQ=7-Q;
 end

 always@(negedge clk or negedge reset)
    begin
      if(!reset)
        begin
          div <= 24999999; //50M / 2 ==> create high and low pulse
          clk_o <= 0;
        end
      else
        if(div == 24999999)
          begin
            clk_o <= ~clk_o;
            div <= 0;
          end
        else
          div <= div + 1;
     end
endmodule