Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Chapter: 2
Q81:
How is the binary number 101102 represented in the decimal system?
A. 18
B. 22
C. 24
D. 26
Correct Answer:
B
Chapter: 2
Q82:
In Binary Addition, what is the sum of 1 + 1?
A. 0, with carry 1
B. 1, with carry 1
C. 0, without carry
D. 1, without carry
Correct Answer:
A
Chapter: 2
Q83:
Which method is quicker for converting small decimal numbers to binary?
A. Repeated Division-by-2
B. Sum-of-non-zero terms
C. Sum-of-Weights
D. Multiplication
Correct Answer:
C
Chapter: 2
Q84:
What is the binary equivalent of the decimal number 392 using the repeated division by 2 method?
A. 11011000
B. 101000110
C. 110001000
D. 101110100
Correct Answer:
C
Chapter: 2
Q85:
In the context of binary arithmetic, what does the binary number 11010 represent in signed 2's complement form?
A. 13
B. -13
C. -6
D. 6
Correct Answer:
C
Chapter: 2
Q86:
What is the result of adding binary numbers 01101 and 10011 in 2's complement form?
A. 1101
B. 110000
C. 100000
D. 11000
Correct Answer:
C
Chapter: 2
Q87:
In binary multiplication, shifting a binary number to the left by two bits is equivalent to multiplication by:
A. 2
B. 4
C. 8
D. 16
Correct Answer:
B
Chapter: 2
Q88:
What is the range of numbers that can be represented using unsigned binary representation?
A. Only positive
B. Both positive and negative
C. Negative only
D. Fractional numbers
Correct Answer:
A
Chapter: 2
Q89:
In the Sum-of-Weights method, what value does a binary bit of 0 contribute to the final sum?
A. Its weight
B. Half its weight
C. Double its weight
D. None
Correct Answer:
D
Chapter: 2
Q90:
What is the binary equivalent of the decimal number 19?
A. 10011
B. 11001
C. 10001
D. 10101
Correct Answer:
A
Chapter: 2
Q91:
The 4-bit 2‟s complement representation of “+5” is _____________
A. 1010
B. 1110
C. 1011
D. 101
Correct Answer:
D
Chapter: 2
Q92:
Which method is faster for converting binary numbers to their decimal equivalents?
A. Sum-of-Weights
B. Sum-of-Bits
C. Sum-of-non-zero terms
D. Subtraction Method
Correct Answer:
C
Chapter: 2
Q93:
How is the binary number 1011.1012 converted to decimal?
A. 11.125
B. 11.625
C. 10.625
D. 11.25
Correct Answer:
B
Chapter: 2
Q94:
What is the first step in converting a decimal number to binary using the Sum-of-Weights method?
A. Find the smallest weight
B. Find the highest weight
C. Subtract the smallest weight
D. Subtract the highest weight
Correct Answer:
B
Chapter: 2
Q95:
Which method divides the decimal number repeatedly by 2 to convert it to binary?
A. Sum-of-Weights
B. Repeated Division-by-2
C. Sum-of-non-zero terms
D. Sum-of-Bits
Correct Answer:
B
Chapter: 2
Q96:
When performing binary addition, what does a sum of 1 and carry of 1 indicate?
A. Sum of 1, carry of 1
B. Sum of 0, carry of 1
C. Sum of 1, carry of 0
D. Sum of 0, carry of 0
Correct Answer:
B
Chapter: 2
Q97:
How is binary subtraction similar to decimal subtraction?
A. Same subtraction logic
B. Different logic but same result
C. Different subtraction logic
D. Binary subtraction does not exist
Correct Answer:
A
Chapter: 2
Q98:
What is the product of multiplying two single-bit binary numbers if both bits are 1?
A. 1
B. 2
C. "0"
D. 11
Correct Answer:
A
Chapter: 2
Q99:
In binary multiplication, what does a left shift by 2 bits represent?
A. Division by 2
B. Multiplication by 2
C. Multiplication by 4
D. Division by 4
Correct Answer:
C
Chapter: 2
Q100:
What does a right shift by 1 bit in binary division represent?
A. Multiplication by 2
B. Division by 2
C. Division by 4
D. Multiplication by 4
Correct Answer:
B