Question

In digital electronics, a flip-flop is a sequential logic circuit capable of storing one bit of information. Which statement about flip-flops is true?

A Flip-flops have a single input and a single output.
B Flip-flops can only operate in an asynchronous mode.
C The output of a flip-flop changes only in response to a clock edge.
D Flip-flops are used exclusively for combinational logic.
E All of these are true
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