XC Problem 5: Sequential Logic (+10 pts) Up until now, we have been working only with combinational logic. Recall that a combinational block of logic has no memory element. Its output is a function of its input only. On the other hand, sequential logic blocks depend both on the input and on the current output Consider the sequential logic circuit on the right. Write the truth table for this circuit. Note that X will appear both as an input and output in your table. Call these X and Xnew