Logic Gates - Combination of Logic Gate

1. Logic gates can be combined together to perform certain tasks.
2. The output can be determined by constructing a truth table.

Example 1:

In the combination of logic gate above, find the outputs X, Y and Z of of the inputs A and B.
Answer:

INPUT			OUTPUT
A	B		X	Y	Z
0	0		1	1	1
0	1		1	0	1
1	0		1	1	1
1	1		0	0	0

Example 2:

In the combination of logic gate above, find the outputs X, Y and Z of of the inputs A and B.
Answer:

INPUT			OUTPUT
A	B		X	Y	Z
0	0		1	1	1
0	1		1	0	1
1	0		0	1	1
1	1		0	0	0

Example 3:

In the combination of logic gate above, find the outputs X, Y and Z of of the inputs A and B.
Answer:

INPUT			OUTPUT
A	B		W	X	Y	Z
0	0		0	0	1	0
0	1		1	0	0	0
1	0		1	1	0	0
1	1		1	1	0	0

Example 4:

In the combination of logic gate above, find the outputs X, Y and Z of of the inputs A and B.
Answer:

INPUT			OUTPUT
A	B		W	X	Y	Z
0	0		0	0	1	1
0	1		1	0	0	0
1	0		1	0	0	0
1	1		1	1	0	1