Digital Logic Circuits Set 12

Computer Science Engineering (CSE)

Practice Mode Previous Next
On This Page

This set of Digital Logic Circuits DLC Multiple Choice Questions & Answers (MCQs) focuses on Digital Logic Circuits Set 12

Q1 | A variable on its own or in its complemented form is known as a                      
  • product term
  • literal
  • sum term
  • word
Answer: literal
Q2 | Canonical form is a unique way of representing                          
  • sop
  • minterm
  • boolean expressions
  • pos
Answer: boolean expressions
Q3 | There are Minterms for 3 variables (a, b, c).
  • 0
  • 2
  • 8
  • 1
Answer: 8
Q4 | Why is a demultiplexer called a data distributor?
  • the input will be distributed to one of the outputs
  • one of the inputs will be selected for the output
  • the output will be distributed to one of the inputs
  • single input gives single output
Answer: the input will be distributed to one of the outputs
Q5 | Most demultiplexers facilitate which type of conversion?
  • decimal-to-hexadecimal
  • single input, multiple outputs
  • ac to dc
  • odd parity to even parity
Answer: single input, multiple outputs
Q6 | In 1-to-4 demultiplexer, how many select lines are required?
  • 2
  • 3
  • 4
  • 5
Answer: 2
Q7 | In a multiplexer the output depends on its                          
  • data inputs
  • select inputs
  • select outputs
  • enable pin
Answer: select inputs
Q8 | In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be                          
  • y0
  • y1
  • y2
  • y3
Answer: y3
Q9 | How many select lines are required for a 1-to-8 demultiplexer?
  • 2
  • 3
  • 4
  • 5
Answer: 3
Q10 | How many AND gates are required for a 1-to-8 multiplexer?
  • 2
  • 6
  • 8
  • 5
Answer: 8
Q11 | Which IC is used for the implementation of 1-to-16 DEMUX?
  • ic 74154
  • ic 74155
  • ic 74139
  • ic 74138
Answer: ic 74154
Q12 | The word demultiplex means                        
  • one into many
  • many into one
  • distributor
  • one into many as well as distributor
Answer: one into many as well as distributor
Q13 | Why is a demultiplexer called a data distributor?
  • the input will be distributed to one of the outputs
  • one of the inputs will be selected for the output
  • the output will be distributed to one of the inputs
  • single input to single output
Answer: the input will be distributed to one of the outputs
Q14 | In a multiplexer the output depends on its                        
  • data inputs
  • select inputs
  • select outputs
  • enable pin
Answer: select inputs
Q15 | In 1-to-4 multiplexer, if C1 = 0 & C2 = 1, then the output will be                        
  • y0
  • y1
  • y2
  • y3
Answer: y1
Q16 | In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be                        
  • y0
  • y1
  • y2
  • y3
Answer: y3
Q17 | What is the addition of the binary numbers 11011011010 and 010100101?
  • 0111001000
  • 1100110110
  • 11101111111
  • 10011010011
Answer: 11101111111
Q18 | Perform binary addition: 101101 + 011011 = ?
  • 011010
  • 1010100
  • 101110
  • 1001000
Answer: 1001000
Q19 | Binary subtraction of 100101 – 011110 is
  • 000111
  • 111000
  • 010101
  • 101010
Answer: 000111
Q20 | Perform multiplication of the binary numbers: 01001 × 01011 = ?
  • 001100011
  • 110011100
  • 010100110
  • 101010111
Answer: 001100011
Q21 | 100101 × 0110 = ?
  • 1011001111
  • 0100110011
  • 101111110
  • 0110100101
Answer: 101111110
Q22 | On multiplication of (10.10) and (01.01), we get
  • 101.0010
  • 0010.101
  • 011.0010
  • 110.0011
Answer: 011.0010
Q23 | Divide the binary numbers: 111101 ÷ 1001 and find the remainder
  • 0010
  • 1010
  • 1100
  • 0011
Answer: 0011
Q24 | Divide the binary number (011010000) by (0101) and find the quotient
  • 100011
  • 101001
  • 110010
  • 010001
Answer: 100011
Q25 | Binary subtraction of 101101 – 001011 = ?
  • 100010
  • 010110
  • 110101
  • 101100
Answer: 100010
Previous Next