B CompE Bachelor of Computer Engineering Digital Logic Design

Question 1

What is the output of an AND gate when both inputs are 1?

Accepted Answer

1

Answer

0

Answer

Undefined

Answer

Depends on voltage

Question 2

Which Boolean expression represents De Morgan's first theorem?

Accepted Answer

(A·B)' = A'+B'

Answer

(A·B)' = A'·B'

Answer

(A+B)' = A'·B'

Answer

(A+B)' = A'+B'

Question 3

How many bits are in one hexadecimal digit?

Accepted Answer

4

Answer

2

Answer

8

Answer

16

Question 4

What is the 2's complement representation of -5 in an 8-bit system?

Accepted Answer

11111011

Answer

11111010

Answer

10000101

Answer

00000101

Question 5

Which logic gate produces an output of 1 only when the number of 1 inputs is odd?

Accepted Answer

XOR gate

Answer

OR gate

Answer

AND gate

Answer

XNOR gate

Question 6

What is the purpose of a Karnaugh Map (K-Map)?

Accepted Answer

To simplify Boolean expressions by grouping minterms

Answer

To simulate digital circuits visually

Answer

To convert decimal numbers to binary

Answer

To design sequential logic circuits