`timescale 1ns / 100ps

//stimulus file for edge triggered D type

module dff_stim;
   reg Clk, D;

   dff dff1 ( Q, D, Clk );

   always
      begin
         Clk = 0; #250 Clk = 1; #500 Clk = 0; #250 Clk = 0;
      end
   initial
      begin
         D = 0;
         #1500
         D = 1;
         #500
         D = 0;
         #1000
         D = 1;
         #1500
         D = 0;
         #500
         D = 1;
         #1000
         D = 0;
         #2000
         D = 1;
         #1000
         $stop;
         $finish;
      end

endmodule