Code Converts and Multiplexers Questions and Answers
Code Converters and Multiplexers are crucial topics in Digital Electronics aptitude questions and answers for exams like GATE, ISRO, DRDO, and BARC. These devices form the backbone of digital systems, helping in signal conversion and data routing. A code converter transforms one type of binary code to another, such as BCD to Gray or binary to excess-3. A multiplexer, on the other hand, selects one of many input signals and forwards it to a single output line. Understanding these concepts strengthens logical and numerical reasoning, especially for electronics and communication aspirants. Explore detailed aptitude questions with solutions PDF and explanations to boost your preparation and master problem-solving in digital circuits effectively.
Code Converts and Multiplexers
11. What control signals may be necessary to operate a 1-line-to-16 line decoder?
- flasher circuit control signal
- a LOW on all gate enable inputs
- input from a hexadecimal counter
- a HIGH on all gate enable circuits
12. One multiplexer can take the place of:
- several SSI logic gates
- combinational logic circuits
- several Ex-NOR gates
- several SSI logic gates or combinational logic circuits
13. How many exclusive-NOR gates would be required for an 8-bit comparator circuit?
- 4
- 6
- 8
- 10
16. How many possible outputs would a decoder have with a 6-bit binary input?
- 16
- 32
- 64
- 128
17. Most demultiplexers facilitate which type of conversion?
- decimal-to-hexadecimal
- single input, multiple outputs
- ac to dc
- odd parity to even parity
18. The inputs/outputs of an analog multiplexer/demultiplexer are:
- bidirectional
- unidirectional
- even parity
- binary-coded decimal
19. Why can a CMOS IC be used as both a multiplexer and a demultiplexer?
- It cannot be used as both.
- CMOS uses bidirectional switches.
20. One application of a digital multiplexer is to facilitate:
- data generation
- serial-to-parallel conversion
- parity checking
- data selector