# BCD Adder MCQ’s

This set of Digital Circuits Multiple Choice Questions & Answers (MCQs) focuses on “BCD Adder”.

1. 2^{9} input circuit will have total of ____________

a) 32 entries

b) 128 entries

c) 256 entries

d) 512 entries

2. BCD adder can be constructed with 3 IC packages each of ____________

a) 2 bits

b) 3 bits

c) 4 bits

d) 5 bits

3. The decimal number system represents the decimal number in the form of ____________

a) Hexadecimal

b) Binary coded

c) Octal

d) Decimal

4. The output sum of two decimal digits can be represented in ____________

a) Gray Code

b) Excess-3

c) BCD

d) Hexadecimal

5. 3 bits full adder contains ____________

a) 3 combinational inputs

b) 4 combinational inputs

c) 6 combinational inputs

d) 8 combinational inputs

6. Complement of F’ gives back __________

a) F’

b) F

c) FF

d) FF’

7. The addition of two decimal digits in BCD can be done through ____________

a) BCD adder

b) Full adder

c) Ripple carry adder

d) Carry look ahead

8. The simplified expression of full adder carry is ____________

a) c = xy+xz+yz

b) c = xy+xz

c) c = xy+yz

d) c = x+y+z

9. Decimal digit in BCD can be represented by ____________

a) 1 input line

b) 2 input lines

c) 3 input lines

d) 4 input lines

10. The number of logic gates and the way of their interconnections can be classified as ____________

a) Logical network

b) System network

c) Circuit network

d) Gate network

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