In this video, you learn how to draw a timing diagram of the Four D Flip Flop in a row. The output of First DFF works as an input to next DFF. The First DFF will give you output at the first clock and Second DFF will start giving output at the second clock, the third DFF at the third clock, and the fourth FF at the fourth clock. D Flip Flop is delay Flip Flop. It will give you the same output as input. It is a positive edge-triggered D FF. The output will trigger at each positive edge of the clock Dr. P. G. video.