/media/sda-magnetic/david/Dokumente-15/fernuni-hagen/cs-i-ii/old-cs-2-03/fsm-21-06-09/automat11.txt

b := (b and not x) or (not b and a and x) or (b and a and not x)
a := (b and not a and x) or (b and not a and not x) or (not b and a and not x) or (b and a and x)
y := (not a and not x) or (not a and b) or (b and x)

Wahrheitstabelle 

        b a x   b a y
0       0 0 0   0 0 1
1       0 0 1   0 0 0
2       0 1 0   0 1 0
3       0 1 1   1 0 0
4       1 0 0   1 1 1
5       1 0 1   0 1 1
6       1 1 0   1 0 0
7       1 1 1   0 1 1