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- Question
A Schmitt trigger has a positive feedback circuit and experiences a phenomenon called hysteresis.
Options- A. True
- B. False
- Correct Answer
- False
- 1. A series RC circuit can be used to generate a power-up (automatic) reset signal.
Options- A. True
- B. False Discuss
- 2. The device that generates a coded output from a single active numeric input line is ________.
Options- A. a decoder
- B. a multiplexer
- C. a comparator
- D. an encoder Discuss
- 3. A 75154 1-of-16 decoder has 16 outputs and decodes an input of ________ bits.
Options- A. two
- B. three
- C. four
- D. six Discuss
- 4. An octal-to-binary encoder has eight data inputs and encodes an output of ________ bits.
Options- A. two
- B. three
- C. four
- D. five Discuss
- 5. A(n) ________ has a number of input lines, only one of which is activated at a given time, and produces on N-bit output code, depending on which input is activated.
Options- A. encoder
- B. code converter
- C. demultiplexer
- D. decoder Discuss
- 6. TTL requires a constant supply voltage of 8.0 V.
Options- A. True
- B. False Discuss
- 7. Pull-up resistors and pull-down resistors are used to keep a floating terminal HIGH.
Options- A. True
- B. False Discuss
- 8. The output of a phototransister is determined by the presence or absence of light at its base input.
Options- A. True
- B. False Discuss
- 9. The term race condition describes the time that an active signal must be present at the input to a flip-flop before an active clock edge is applied.
Options- A. True
- B. False Discuss
- 10. A transfer function graph illustrates the most important specifications for the Schmitt trigger devices.
Options- A. True
- B. False Discuss
Digital Design problems
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Correct Answer: an encoder
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Correct Answer: three
Correct Answer: encoder
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