File:Negative-edge triggered master slave D flip-flop.svg - Wikimedia Commons
Edge-Triggered J-K Flip-Flop
D Type Flip-flops
Solved Consider the Falling-Edge D Flip-Flop with | Chegg.com
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digital logic - Why is D flip-flop positive edge triggered instead of level triggered? - Electrical Engineering Stack Exchange
JK Flip-flop: Positive Edge Triggered and Negative Edge-Triggered Flip-Flop
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JK Flip-Flop Explained | Race Around Condition in JK Flip-Flop | JK Flip- Flop Truth Table, Excitation table and Timing Diagram - ALL ABOUT ELECTRONICS