Discussion
Home ‣ Electronics ‣ Combinational Logic Circuits Comments
- Question
How many inputs are required for a 1-of-10 BCD decoder?
Options- A. 4
- B. 8
- C. 10
- D. 1
- Correct Answer
- 4
- 1. A circuit that responds to a specific set of signals to produce a related digital signal output is called a(n):
Options- A. BCD matrix
- B. display driver
- C. encoder
- D. decoder Discuss
- 2. Which type of decoder will select one of sixteen outputs, depending on the 4-bit binary input value?
Options- A. hexadecimal
- B. dual octal outputs
- C. binary-to-hexadecimal
- D. hexadecimal-to-binary Discuss
- 3. Most demultiplexers facilitate which of the following?
Options- A. decimal to hexadecimal
- B. single input, multiple outputs
- C. ac to dc
- D. odd parity to even parity Discuss
- 4. One application of a digital multiplexer is to facilitate:
Options- A. code conversion
- B. parity checking
- C. parallel-to-serial data conversion
- D. data generation Discuss
- 5. A multiplexed display:
Options- A. accepts data inputs from one line and passes this data to multiple output lines
- B. uses one display to present two or more pieces of information
- C. accepts data inputs from multiple lines and passes this data to multiple output lines
- D. accepts data inputs from several lines and multiplexes this input data to four BCD lines Discuss
- 6. 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
- 7. 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
- 8. Mod-6 and mod-12 counters are most commonly used in:
Options- A. frequency counters
- B. multiplexed displays
- C. digital clocks
- D. power consumption meters Discuss
- 9. When the output of a tri-state shift register is disabled, the output level is placed in a:
Options- A. float state
- B. LOW state
- C. high impedance state
- D. float state and a high impedance state Discuss
- 10. A comparison between ring and johnson counters indicates that:
Options- A. a ring counter has fewer flip-flops but requires more decoding circuitry
- B. a ring counter has an inverted feedback path
- C. a johnson counter has more flip-flops but less decoding circuitry
- D. a johnson counter has an inverted feedback path Discuss
Combinational Logic Circuits problems
Search Results
Correct Answer: encoder
Correct Answer: hexadecimal
Correct Answer: single input, multiple outputs
Correct Answer: parallel-to-serial data conversion
Correct Answer: uses one display to present two or more pieces of information
Correct Answer: priority encoding
Correct Answer: to convert the 4-bit BCD into 7-bit code
Correct Answer: digital clocks
Correct Answer: float state and a high impedance state
Correct Answer: a johnson counter has an inverted feedback path
Comments
There are no comments.More in Electronics:
Programming
Copyright ©CuriousTab. All rights reserved.