Discussion
A clock signal with a period of 1 µs is applied to the input of an enable gate. The output must contain six pulses. How long must the enable pulse be active?
Answer: C
Correct answer: Enable must be active for 6 µs.
Each clock period delivers one pulse, so six pulses take six periods:
\[ 6\times 1\ \mu\text{s} = 6\ \mu\text{s} \]
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