Combinational Logic Circuits problems
- 1. When two or more inputs are active simultaneously, the process is called:
Options- A. first-in, first-out processing
- B. priority encoding
- C. ripple blanking
- D. priority decoding Discuss
Correct Answer: priority encoding
- 2. In a BCD-to-seven-segment converter, why must a code converter be utilized?
Options- A. No conversion is necessary.
- B. to convert the 4-bit BCD into gray code
- C. to convert the 4-bit BCD into 10-bit code
- D. to convert the 4-bit BCD into 7-bit code Discuss
Correct Answer: to convert the 4-bit BCD into 7-bit code
- 3. A magnitude comparator outputs the highest or lowest value of its inputs depending on control signals.
Options- A. True
- B. False Discuss
Correct Answer: False
- 4. A decoder with two inputs will have two outputs for the decoded value.
Options- A. True
- B. False Discuss
Correct Answer: False
- 5. A multiplexer is a device that chooses which output to send an input to by means of select lines.
Options- A. True
- B. False Discuss
Correct Answer: True
- 6. Parity checking can only detect an odd number of errors.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. An encoder circuit is designed to generate specific codes.
Options- A. True
- B. False Discuss
Correct Answer: False
- 8. An AND gate and two INVERTERs can be connected to act as a basic decoder.
Options- A. True
- B. False Discuss
Correct Answer: True
- 9. A multiplexer is a device that outputs a fixed sequence of binary states on each clock pulse.
Options- A. True
- B. False Discuss
Correct Answer: False
- 10. The general function of a decoder is to activate one or more circuit outputs upon detection of a particular digital state.
Options- A. True
- B. False Discuss
Correct Answer: True
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