Digital Electronics Lab

2) A __________ gate gives the output as 1 only if all the inputs signals are 1.

• a) AND

• b) OR

• c) EXOR

• d) NOR

3) The boolean expression of an OR gate is _______

• a) A.B

• b) A’B+AB’

• c) A+B

• d) A’B’

4) Which of the following gate will give a 0 when both of its inputs are 1?

• a) AND

• b) OR

• c) NAND

• d) EXOR

The universal gate is ………………

• NAND gate

• OR gate

• AND gate

• None of the above

2’s complement of binary number 0101 is

• 1011

• 1111

• 1101

• 1110

For the gate in the given figure the output will be ………..

• 0

• 1

• A

• Ā

What is the BCD representation of the binary code " 01101"

• 10011

• 10010

• 11100

• 11001

The circuit of the given figure realizes the function …………

• Y = (A'+B')C + (DE)'

• Y = A'+B'+C'+D'+E'

• AB+C+D'E

• AB+C(D+E')

What is the expression for the SUM output of a full adder?

• A⊕B⊕C_in

• A⊕B

• A⊕C_in

• (A+B)⊕C_in

How many pin legs have for 7483 IC

• 16

• 14

• 12

• 8