Digital Electronics-Digital System Projects Using HDL
Digital Electronics-Digital System Projects Using HDL
11. In an HDL stepper motor design, why is there more than one mode?
- To change the speed of the stepper motor
- To change the direction of the stepper motor
- To direct drive the stepper motor
- All of the above
12. Which is not a major block of an HDL frequency counter?
- Display register
- Decoder/display
- Timing and control unit
- Bit shifter
13. In a full-step sequence involving two flip-flops driving four coils of a stepper motor, how far will the stepper motor step?
- 90°
- 45°
- 30°
- 15°
14. Which is not a step used to define the scope of an HDL project?
- Are the inputs and outputs active HIGH or active LOW?
- A clear vision of how to make each block work
- What are the speed requirements?
- How many bits of data are needed?
15. In the digital clock project, what is the frequency of the MOD-6 counter in the minutes section?
- 1 pulse per minute
- 6 pulses per minute
- 10 pulses per minute
- 1 pulse per hour
16. Why should a real hardware functional test be performed on the HDL stepper motor design?
- To check the speed of the software
- To check the current levels in the motor
- To check the voltage levels of the real outputs
- To provide a fully operational system
17. What does the major block of an HDL code emulation of a keypad include?
- A sequencer
- A clock
- A multiplexer
- A ring counter
18. The accuracy of the frequency counter depends on the:
- system clock frequency.
- number of displayed digits.
- sampling rate.
- display update rate.
19. In the frequency counter, if the clock generator produces a 100 kHz system clock signal, how many decade counters are required to measure 1 Hz?
- 6
- 5
- 4
- 3
20. What must a stepper motor HDL application include?
- Variables and processes
- Types and bits
- Counters and decoders
- Sequencers and multiplexers