Digital System Projects Using HDL problems
- 1. In the keypad encoder, the ________ detects when a key is pressed.
Options- A. ring counter
- B. MOD-6 counter
- C. BCD counter
- D. freeze bit Discuss
Correct Answer: freeze bit
- 2. Depending on the ________ the IC is in, the output of the stepper motor HDL will respond to each pulse by changing state.
Options- A. mode
- B. make
- C. input
- D. output Discuss
Correct Answer: mode
- 3. In the digital clock project, a 60 pps input is transformed into a 1 pps timing signal. The block is called ________.
Options- A. a BCD counter
- B. a MOD-60 counter
- C. frequency divider
- D. frequency prescaling Discuss
Correct Answer: frequency prescaling
- 4. In a real project, the first step of definition often involves some ________ on the part of the project manager.
Options- A. time
- B. skill
- C. research
- D. management Discuss
Correct Answer: research
- 5. A frequency counter ________ a signal.
Options- A. measures
- B. displays
- C. measures and displays
- D. measures, displays, and generates Discuss
Correct Answer: measures and displays
- 6. When coming up with a strategy for dividing the overall project into manageable-size pieces one must ________.
Options- A. name each input and output
- B. fully understand how the device should operate
- C. define successful completion of the project
- D. know the nature of all the signals that interconnect all the pieces Discuss
Correct Answer: know the nature of all the signals that interconnect all the pieces
- 7. The full-step sequence of a stepper motor always has two coils energized in any state of the sequence and typically causes ________ of shaft rotation per step.
Options- A. 5°
- B. 10°
- C. 15°
- D. 20° Discuss
Correct Answer: 15°
- 8. In the keypad encoder, the ________ must hold in its current state until a key is released.
Options- A. ring counter
- B. MOD-6 counter
- C. BCD counter
- D. freeze bit Discuss
Correct Answer: ring counter
- 9. In the frequency counter, the length of time for the ________ to be enabled can be selected with the range select input.
Options- A. display register
- B. frequency prescaler
- C. BCD counter
- D. signal generator Discuss
Correct Answer: BCD counter
- 10. The stepper motor HDL will ignore its counter inputs and pass control inputs directly to the output when set in mode ________.
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
Correct Answer: 1
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