Edge triggered flip flops

Edge triggered flip flops An edge-triggered flip-flop is a device designed to respond to a raising or a falling edge of the
clock signal. The influence of external signals on inputs and changes on outputs of edge-triggered
flip-flops are made on the same edge of the clock. Changes of input signals that occur outside of
the very short time (setup time + hold time) around the active edge of the flip-flop are ignored. The
logic symbol of positive edge-triggered D flip-flop is given in Fig. 14 and logic symbol of negative
edge-triggered D flip-flop is given in Fig. 15.
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