Problem: Add an Emergency State:

RY blink: for x = 1 go into emergency state for x = 0 go into next state;

Consider the emergency state to be 110. We have 7 states now (0 to 6) and 4 variable table, for ABC and X. From emergency for x=1 stays in emergency for x=0 reset to 000. Since it was not clearly mentioned, you can also consider that by 0/1 stays in emergency state. In that case you will get different expressions for the flip flop(f/f) inputs.

Current Input Next Q(t) Q(t)+1 ABC x DaDbDc <---what does this mean ---------------------------------------------------------------- 000 0 001 000 1 110 <----- how? 001 0 010 001 1 110 ..... ...... .....

00 01 11 10 00 1 1 01 1 1 1 11 0 1 x x 10 1 1 1

Da = X+BC+AB'C' How to figure out the kmap table above

The chart and the kmap are part of solution to this Problem.