(Time Response) Consider the following circuits with feedback, that is, the output also se...

(Time Response) Consider the following circuits with feedback, that is, the output also serves as an input to the function.

(a) Determine the output of NOR gate U3 in Figure 1(a) when the switch to ground alternates between being closed and being open. Draw a timing diagram to illustrate your answer.

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(b) Repeat your analysis for the circuit in Figure 1(b) that looks similar. Draw a timing diagram to explain its time dependent behavior. Does this circuit generate an oscillating output? If so, why? If not, why not?

Figure 1