ECL 203-LCD Lab Viva

Select the correct option.

• AND-7404, NOT-7408, OR-7400, NAND-7432

• AND-7408,NOT-7404,OR-7400,NAND-7432

• AND-7404, NOT-7408, OR-7432, NAND-7400

• AND-7408, NOT-7404, OR-7432, NAND-7400

How many 2-input NAND gates would you require to realize a 2-input NOR gate?

• 1

• 2

• 3

• 4

Give the Boolean expression for XNOR gate

• (A+B)’

• A’B+AB’

• AB+A’B’

• A’B’

Convert (12.1)₃ to a decimal number.

• 15.33

• 11.33

• 5.33

• 1.33

The Boolean expression for sum of a half adder is :

• A⊕B

• A+B

• A-B

• AB

The Boolean expression for carry of a full adder is

• A_n B_n C_(n-1)

• A_n ⊕B_n⊕C_(n-1)

• $A_nB_n+C_{n-1}.(A_n⊕B_n)$

• None

The Boolean expression for borrow of a half subtractor is :

• AB

• A’B

• AB’

• A’B’

2’s complement of 11000 is:

• 00111

• 00010

• 01010

• 01000

Given Y= f(A,B,C) = Ʃ(0,1,2,3,4,5,6,7). Therefore, Y is equal to:

• ABC

• 1

• A’B’C’

• 0

The maxterm X’+ Y’+Z is designated as:

• M1

• M3

• M6

• M7