Question No. 1 [Marks: 7]

Determine Q output waveform for a negative edge triggered J-K flip-flop with preset, clear and J, K inputs. You are required to draw Q output waveform on timing diagram.

Question No. 2 [Marks: 1+2]

 Provide to-the-point answers to the following questions:

1. How does a synchronous counter differ from asynchronous counter?
2. How many states does a mod-12 counter have? What is minimum number of flip-flops required?