Question 1: SR FF So far, all circuits we have studied are combinatorial logic. In this lab we will learn about sequential logic circuits. Probably the simplest sequential logic circuit is a SR flip-flop. The logic diagram of a SR FF is shown below. Complete the truth table of the SR FF circuit. Notes: The inputs are S and R. The outputs are a and Q bar, where a bar is Q, i.e. if a 0 then Q bar 1. Q_prev is the value of Q in the last iteration. Suppose current value of Q is 0, if you change the inputs, then Q_prev becomes 0 (and the current value of Q will be updated). Use letter "X" to indicate "don't cares", invalid, or unidentifiable values. The first line has been completed for you. You should verify that it is correct. Q_prev x means regardless of the value of Q_prev, Q will always become 1. Q bar 0 0 0 1