flip flop related question
Counters are made from flip-flops. This is also a counter which produces different counts on each clock cycle, based on the inputs X and Y. This is an asynchronous counter because the first flip-flop is clocked by CK and the second flip-flop is clocked by the Q' of the first flip-flop. Both the flip-flops are rising edge triggered. CLR is an active-low asynchronous signal to clear the Q outputs of flip-flops anytime. You have the input waveforms for X and Y. You have the truth table for JK flip-flop as well. All left is to look at the waveform and the truth table, and find the outputs for each rising clock edge on both flip-flops.