A3	A2	A1	A	Y
0	0	0	0	1
1	0	0	0	1
1	1	0	0	1
0	1	0	0	1
0	1	1	0	1
1	1	1	0	1
1	0	1	0	1
0	0	1	0	1
0	0	1	1	1
1	0	1	1	1
1	1	1	1	0
0	1	1	1	1
0	1	0	1	1
1	1	0	1	1
1	0	0	1	1
0	0	0	1	1

function: Y = !(A3 && A2 && A1 && A)