Digital Circuits Questions and Answers – 1’s, 2’s, 9’s & 10’s Complements – 2

This set of Digital Electronic Circuits Interview Questions and Answers focuses on “1’s,2’s,9’s & 10’s Complements-2”.

1. If the number of bits in the sum exceeds the number of bits in each added numbers, it results in _________
a) Successor
b) Overflow
c) Underflow
d) Predecessor

2. An overflow is a _________
a) Hardware problem
b) Software problem
c) User input problem
d) Input Output Error

3. An overflow occurs in _________
a) MSD position
b) LSD position
c) Middle position
d) Signed Bit

4. Logic circuitry is used to detect _________
a) Underflow
b) MSD
c) Overflow
d) LSD

5. 1’s complement can be easily obtained by using _________
a) Comparator
b) Inverter
c) Adder
d) Subtractor

6. The advantage of 2’s complement system is that _________
a) Only one arithmetic operation is required
b) Two arithmetic operations are required
c) No arithmetic operations are required
d) Different Arithmetic operations are required

7. The 1’s complements requires _________
a) One operation
b) Two operations
c) Three operations
d) Combined Operations

8. Which one is used for logical manipulations?
a) 2’s complement
b) 9’s complement
c) 1’s complement
d) 10’s complement

9. For arithmetic operations only _________
a) 1’s complement is used
b) 2’s complement
c) 10’s complement
d) 9’s complement

10. The addition of +19 and +43 results as _________ in 2’s complement system.
a) 11001010
b) 101011010
c) 00101010
d) 0111110

Answer: d
Explanation: The decimal numbers are converted to their respective binary equivalent and then the binary addition rules are applied.

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