Question

Truth table for the following digital circuit will be :

• A.

  x	y	z
  0	0	0
  0	1	0
  1	0	0
  1	1	1

• B.

  x	y	z
  0	0	1
  0	1	1
  1	0	1
  1	1	0

• C.

  x	y	z
  0	0	1
  0	1	1
  1	0	1
  1	1	1

• D.

  x	y	z
  0	0	0
  0	1	1
  1	0	1
  1	1	1

Answer 1

Answer: (C)

The given circuit is

x	y	$\overline{x}$	$x\cdot y$	$\bar{x}\cdot y$	$(x\cdot y)\cdot (\bar{x}y)$	$z=\overline{(x\cdot y)\cdot (\bar{x}y)}$
0	0	1	0	0	0	1
0	1	1	0	1	0	1
1	0	0	0	0	0	1
1	1	0	1	0	0	1

x	y	z
0	0	1
0	1	1
1	0	1
1	1	1