// Save it as clk_divider.v
// At this time you do not need to know how this divider works!
// You will become familiar with it in the lab #7

module  clock_divider ( cin, cout );
    
    input cin;
    output cout;

    parameter timeconst = 60;//constant 
    integer count0;
    integer count1;
    integer count2;
    integer count3;
    reg d;
    reg cout;
       

   always @ (posedge cin ) // begin 
       begin 
               begin 
                   count0 <= (count0 + 1);
                   if ((count0 == timeconst)) 
                       begin 
                           count0 <= 0;
                           count1 <= (count1 + 1);
                       end
                       
                   else if ((count1 == timeconst)) 
                       begin 
                           count1 <= 0;
                           count2 <= (count2 + 1);
                       end
                       
                   else if ((count2 == timeconst)) 
                       begin 
                           count2 <= 0;
                           count3 <= (count3 + 1);
                       end
                       
                   else if ((count3 == timeconst)) 
                       begin 
                           count3 <= 0;
                           d <= ~ (d);
                       end
                   
               end
               
           cout <= d;
       end 
   // end always 

endmodule