Digital Electronics Combinational Logic Circuits Questions and Answers

Practice Mode
Showing 10 of 59 questions
Q1
How many 3-line-to-8-line decoders are required for a 1-of-32 decoder?
  • A 1
  • B 2
  • C 4
  • D 8
Answer: Option C
Q2
Convert BCD 0001 0010 0110 to binary.
  • A 1111110
  • B 1111101
  • C 1111000
  • D 1111111
Answer: Option A
Q3
Convert BCD 0001 0111 to binary.
  • A 10101
  • B 10010
  • C 10001
  • D 11000
Answer: Option C
Q4
How many data select lines are required for selecting eight inputs?
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option C
Q5
How many 1-of-16 decoders are required for decoding a 7-bit binary number?
  • A 5
  • B 6
  • C 7
  • D 8
Answer: Option D
Q6
The implementation of simplified sum-of-products expressions may be easily implemented into actual logic circuits using all universal ________ gates with little or no increase in circuit complexity. (Select the response for the blank space that will BEST make the statement true.)
  • A AND/OR
  • B NAND
  • C NOR
Answer: Option B
Q7
Which of the following statements accurately represents the two BEST methods of logic circuit simplification?
  • A Boolean algebra and Karnaugh mapping
  • B Karnaugh mapping and circuit waveform analysis
  • C Actual circuit trial and error evaluation and waveform analysis
  • D Boolean algebra and actual circuit trial and error evaluation
Answer: Option A
Q8
Which of the following combinations cannot be combined into K-map groups?
  • A Corners in the same row
  • B Corners in the same column
  • C Diagonal corners
  • D Overlapping combinations
Answer: Option C
Q9
Which gate is best used as a basic comparator?
  • A NOR
  • B OR
  • C Exclusive-OR
  • D AND
Answer: Option C
Q10
In VHDL, macrofunctions is/are:
  • A digital circuits.
  • B analog circuits.
  • C a set of bit vectors.
  • D preprogrammed TTL devices.
Answer: Option D

📚 More from Digital Electronics

← All Topics 🎯 Practice ⏱️ Take Test 🔍 Search
Digital Electronics
Back to Digital Electronics
Other Subjects
Questions and Answers for Competitive Exams Various Entrance Test