In order to build a T flip-flop from a D flip-flop, all you need is a D flip-flop and an XOR gate. Convince yourself that the circuit shown behaves as a T flip-flop...
Circuit Diagram of a T-Flip-Flop. |
Circuit of a T Flip-Flops built from a D Flip-Flops. (Enlarge) |
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"Contact Bouncing" You may have noticed that when you press the push button Clk the T flip-flop changes sometimes several times the outcome. Mechanical key switches create a lot of electronic noise when shifting. In that way it can happen that the flip-flop sees this as several rising edges and switches accordingly. This behavior is called "contact bouncing". |
In next step you will see that you can build all classes of flip-flops with just D flip-flops.
