Types of flip-flop circuits explained - RS, JK, D & T - Bright Hub Engineering
D Flip-Flops
flipflop - Explanation of Edge Triggered D type flip flop triggered at positive edge of the clock pulse cycle (from Morris Mano Book)? - Electrical Engineering Stack Exchange
D-type Flip Flop Counter or Delay Flip-flop
D Flip Flop Explained in Detail - DCAClab Blog
D-Type Flip Flop Circuit Diagrams in Proteus - The Engineering Projects