1. (25 points) Design a sequential circuit which counts through the following cycles :11, 10, 01, 00,11... using T flip-flops Present state AB 11 10 01 00 B' clk Next state A+ B+ 1 10 01 N 00 11 TA = AB' + A'B' = (A+A')B' = B' TB = 1 T flip-flop input TA TB 0 1 1 1 0 1 1 1 TB A A' B B' Counter A Counter B