Investigate the operation of the following circuit. Assume an initial state of 0000. Trace the outputs (the Qs) as the clock ticks and determine the purpose of the circuit. You must show the trace to...

Investigate the operation of the following circuit. Assume an initial state of 0000. Trace the outputs (the Qs) as the clock ticks and determine the purpose of the circuit. You must show the trace to complete your answer. state. If N = 1, the next state of the flip-flop is equal to the value of L. a) Derive the characteristic table for the NL flip-flop. b) Show how an SR flip-flop can be converted to an NL flip-flop by adding gate(s) and inverter(s). (Hint: What values must S and R have so that the flip-flop will be set and reset at the proper time when N = 1? How can you prevent the flip-flop from changing state when N = 0?)