1. Give the circuit symbol ,the excitation table and the characteristic equation of each of the following flip-flops:

1. 1. R-S flip-flop.
   2. D flip-flop.
   3. J-K flip-flop.
   4. T flip-flop.
2. Beginning with an R-S flip-flop show how to get

1. D flip-flop.
2. J-K flip-flop.
3. T flip-flop.

3. Beginning with an D flip-flop show how to get

1. J-K flip-flop.
2. T flip-flop.

4. Beginning with an J-K flip-flop show how to get

1. D flip-flop.
2. T flip-flop.

5. Beginning with an T flip-flop show how to get

1. D flip-flop.
2. J-K flip-flop.

6. Implement a new flip-flop type, called X-Y flip-flop, that has the following truth table

X	Y	Q(t+1)
0	0	Reset
0	1	Q(t)
1	0	Q'(t)
1	1	Set