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Shows the functionality of a D Flip-Flop, implemented using logic gates!
This circuit is designed to demonstrate how a D flip-flop stores and transfers data using basic logic gates.
Note that the flip-flop responds only on the active clock edge. Changes to the D input have no immediate effect on the output until a clock transition occurs.
When the clock edge occurs, observe that the output Q takes on the value present at the D input at that exact moment. If D is high at the clock edge, Q is set high. If D is low at the clock edge, Q is set low.
If you slow the clock down, you can clearly see that the output remains constant between clock edges, even if the D input changes. This highlights the flip-flop’s ability to store a single bit of information.
Also note the complementary output Q̅, which always remains the inverse of Q.
Because this flip-flop is constructed from logic gates, observe how the gating of the clock controls when data is allowed to pass and when it is held. In steady operation, the circuit samples the D input only at the clock edge and maintains that value until the next clock event.
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