What is meant by triggering or triggering edge of clock pulse and synchronous? also what is trigging transition of clock?
Generally the term 'synchronous' means "Moving or changing at the same time". In our scenario this term also holds the same meaning.
Here the two things which will change at the same time will be "Clock (CLK or C )" and the "output of the device". Means changes in the output occur with synchronization with clock.
Edge-Triggered devices changes states either at the positive edge(rising edge) or the negative edge (falling edge) of the clock pulse and is sensitive to its inputs only at the these two (negative or positive) edges, which in technical terms is called 'Transition of the clock'.
By examining the picture below you will understand it completely.
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