The following figure represents a sequential circuit. This circuit is built with 3 JK flip-flops to perform a specific function. The initial value of each rocker, before the first clock pulse, is "0".

1/ Give the states of the flip-flops for the first 9 clock pulses. Complete the waveforms (i.e. timing diagram) below.
2/ Give the diagram of the states of the circuit
3/ Explain the function performed by this circuit.
4/ Add to the circuit the logic gate necessary to reset the flip-flops (Q0 = 0, Q1 = 0, Q2 = 0), with the asynchronous entry CLEAR when the value of the three flip-flops reaches 101 (Q2 = 1 and Q1 = 0, and Q0 = 1)

 

CLK Q2 1 2 2 3 Q2 Ja Ka 5 Q NNNNNNNN 6 20