A small triangle at the CLK input on a standard flip- flop symbol indicates that any change in the output is triggered by a clock transition.

Question

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The small triangle at the CLK input on a flip-flop symbol indicates that the flip-flop is edge-triggered, meaning its output changes state in response to a clock transition (either rising or falling edge, depending on the flip-flop type).

A Small Triangle at the CLK Input on a Standard