Question 1

The first step in structured project development is:
A) system integration.
B) break the project into small, manageable pieces.
C) overall definition.
D) synthesis and testing of each piece.

Accepted Answer

The first step in structured project development is the overall definition of the project. This involves understanding the project's goals, scope, and constraints before breaking it down into smaller parts or integrating systems.

Question 2

Synthesis and testing of each piece of the project building blocks:
A) is necessary at all system levels.
B) is unnecessary because most subsystems have already been built and tested.
C) would require too much time reproving known technology.
D) is necessary for important subsystems but can be avoided for small, easily developed subsystems.

Accepted Answer

Synthesis and testing at all system levels ensure that each component functions correctly within the system, identifying and addressing potential issues early in the development process. This approach is crucial for the overall reliability and functionality of the system.

Question 3

The last step in the small project development process is:
A) synthesis and testing of each piece.
B) overall definition.
C) strategic planning.
D) system integration and testing.

Accepted Answer

The last step in the small project development process is system integration and testing, where all the developed components are combined and tested as a whole to ensure they work together correctly.

Question 4

Which of the following would NOT be considered a definition of scope?
A) What components are available for implementation?
B) What sources of power will be utilized?
C) What are the project design limits?
D) Will inferred technology work or will RF be needed?

Accepted Answer

The answer of Which of the following would NOT be...

Question 5

Small project development should be managed with deliberation that is equal to that of large project development. The only issue large and small projects don't have in common is:
A) small projects are already divided into small pieces so further division is unnecessary.
B) small project definition is obvious.
C) size of project.
D) large project management requires professional planning.

Accepted Answer

The primary difference between managing small and large projects lies in their size. Both types of projects share common issues such as the need for clear definition and professional planning, and both can benefit from being divided into manageable pieces. The size of the project influences the scale and complexity of these tasks, but it does not fundamentally change the nature of project management principles applied.

Question 6

A problem statement is developed because a need exists. The statement should:
A) be considered the blueprint for development.
B) include every need.
C) develop as the project begins to take shape.
D) be specific and include all known obstacles.

Accepted Answer

The answer of A problem statement is developed because a...

Question 7

During the strategic planning mode, it has become apparent that a required subsystem does not fit the planned application as assumed. Planners have made the decision to use a completely different technology to achieve the same end. In keeping with structured project development:
A) the original problem statement must be redesigned.
B) each system must be tested and or addressed form comparability.
C) all subsystems must be individually tested again.
D) No changes are required: continue to develop project on an as built basis.

Accepted Answer

The answer of During the strategic planning mode, it has...

Question 8

After repeated simulated testing, a stepper motor drive was considered fully functional in every aspect. At this point:
A) the drive should be tested under actual conditions.
B) simulated testing should be continued until failure results. Then document failure and decide if it is acceptable or unacceptable.
C) unusual or extraordinary conditions should be developed and tested on the drive.
D) the drive is ready for quality testing and prototyping.

Accepted Answer

Testing under actual conditions is crucial to ensure the stepper motor drive operates correctly in real-world scenarios, beyond the controlled environment of simulated testing.

Question 9

"Synchronously cascaded" refers to:
A) multiple output or inputs processed by the same clock pulse.
B) development of a signal through repeated division of original signal.
C) any clock signal.
D) a process in which 60 Hz clock signals are produced.

Accepted Answer

"Synchronously cascaded" refers to multiple outputs or inputs being processed or controlled by the same clock pulse, ensuring that all operations are synchronized with each other.

Question 10

The outputs enable function:
A) activates Hi- Z mode or tri- state buffer.
B) activates high output on tri- state buffer.
C) activates low output on tri- state buffer.
D) allows tri- state buffer to go either high or low as needed.

Accepted Answer

The answer of The outputs enable function:
A) activates Hi- Z...

Question 11

A 4- bit ring counter that requires only four possible output combinations would disregard eleven combinations. What effect would the clock frequency have on the output?
A) The output frequency would be equal to a MOD 4 counter.
B) The output frequency would be equal to a MOD 16 counter.
C) The output frequency would equal the input frequency.
D) None of the above

Accepted Answer

A 4-bit ring counter cycles through 4 unique states regardless of being a 4-bit system, which inherently could represent 16 states (2^4). Thus, its output frequency is akin to a MOD 4 counter, as it repeats every 4 clock cycles, not 16.

Question 12

Schmitt- trigger integrated circuits:
A) buffer data bus from output/input devices.
B) generate Hz clock pulses.
C) condition input signals.
D) require RC networks.

Accepted Answer

Schmitt-trigger integrated circuits are used to condition input signals, ensuring that digital circuits can reliably interpret signal levels by providing a clear distinction between high and low states, especially in the presence of noisy signals.

Question 13

From 60 Hz wave input, what is required for reliable clock signal?
A) Schmitt- Trigger, and then a MOD 60 counter
B) MOD 60 counter
C) MOD 6 counter, and then a Schmitt- Trigger
D) Schmitt- Trigger, and then a MOD 2 counter

Accepted Answer

A Schmitt-Trigger is used to clean up the noisy signal into a stable square wave, and then a MOD 60 counter is used to divide the frequency to get a 1 Hz clock signal from a 60 Hz input.

Question 14

A digital clock model decodes a 1 pulse per second input into seconds, minutes and hours; sixty seconds advance minutes, and sixty minutes advance hours. How do hours recycle back to one after 12?
A) The 1 for tens of hours and 2 for ones of hours is detected and resets hours back to zero.
B) The 2 is detected and resets the new tens and ones of hours to zero.
C) A MOD 6 counter automatically resets hours to zero.
D) The 1 for tens of hours and 2 for ones of hours is detected and resets hours back to 1 o'clock.

Accepted Answer

The correct answer is D because in a 12-hour clock format, after reaching 12:59, the next increment would logically reset the clock to display 1:00, indicating the start of a new cycle. This is achieved by detecting the combination of 1 in the tens place and 2 in the ones place of the hour display and then resetting the hours to 1, not to zero.

Question 15

City planners know that 20,000 square feet of government office space must be built on the west edge of the city within the next two years. This kind of project development qualifies as:
A) project synthesis.
B) top- down hierarchical design.
C) strategic planning.
D) problem statement.

Accepted Answer

The answer of City planners know that 20,000 square feet...

Question 16

In general, digital clock hours and minutes can be adjusted by:
A) using thumbwheel style BCD preloading.
B) using a second, high speed clock pulse and enabling it only during time set mode.
C) designing a clock set circuit to preload counter.
D) routing the seconds counter to the hours and minutes clock as needed.

Accepted Answer

The answer of In general, digital clock hours and minutes...

Question 17

Sine wave clock pulses are not appropriate for most clock inputs because:
A) the negative going portion of the waveform would reverse bias input circuitry and cause circuit failure.
B) the negative going waveform would introduce unwanted noise.
C) sine waves have no defined on/off values.
D) off would not be at ground potential. It would have a negative potential.
E) C or D

Accepted Answer

Sine waves lack defined on/off values, which are crucial for digital circuits to distinguish between high and low states. Additionally, the "off" state in a sine wave would not be at ground potential but could instead have a negative potential, complicating the interpretation of signals by digital devices.

Question 18

A 60 Hz line voltage is supplying a MOD 60 counter through a Schmitt trigger. The clock frequency:
A) would still be dependent on line frequency.
B) is generated by an oscillator powered from the line frequency.
C) would be conditioned and independent from line frequency.
D) Both B and C

Accepted Answer

The clock frequency for a MOD 60 counter supplied through a Schmitt trigger from a 60 Hz line voltage would still be dependent on the line frequency. The Schmitt trigger conditions the signal for the counter but does not change its fundamental frequency.

Question 19

Dark box design is similar to thevenizing an unknown analog output voltage. The black box represents:
A) one system in a group of systems.
B) unknown systems inside the box and unknown outputs outside the box.
C) a system of unknowns with a known output.
D) a system of known values cloaked because the details are unimportant.

Accepted Answer

A dark box design, similar to "Thevenizing" an unknown analog output voltage, represents a system of unknowns with a known output. This means that while the internal workings or components of the system (the "black box") are not known or specified, the output it produces is known.

Question 20

Which of the following is one of the reasons a digital clock project is a valuable learning tool for project development?
A) Low power consumption
B) Low parts count
C) Everyone is familiar with clocks
D) Inexpensive parts

Accepted Answer

Digital clock projects are valuable learning tools because they are relatable and familiar to everyone, making the concepts and functionality easier to understand and apply.

Quiz 10: Digital System Projects Using HDL

The first step in structured project development is:

Synthesis and testing of each piece of the project building blocks:

The last step in the small project development process is:

Which of the following would NOT be considered a definition of scope?

Small project development should be managed with deliberation that is equal to that of large project development. The only issue large and small projects don't have in common is:

A problem statement is developed because a need exists. The statement should:

During the strategic planning mode, it has become apparent that a required subsystem does not fit the planned application as assumed. Planners have made the decision to use a completely different technology to achieve the same end. In keeping with structured project development:

After repeated simulated testing, a stepper motor drive was considered fully functional in every aspect. At this point:

"Synchronously cascaded" refers to:

The outputs enable function:

A 4- bit ring counter that requires only four possible output combinations would disregard eleven combinations. What effect would the clock frequency have on the output?

Schmitt- trigger integrated circuits:

From 60 Hz wave input, what is required for reliable clock signal?

A digital clock model decodes a 1 pulse per second input into seconds, minutes and hours; sixty seconds advance minutes, and sixty minutes advance hours. How do hours recycle back to one after 12?

City planners know that 20,000 square feet of government office space must be built on the west edge of the city within the next two years. This kind of project development qualifies as:

In general, digital clock hours and minutes can be adjusted by:

Sine wave clock pulses are not appropriate for most clock inputs because:

A 60 Hz line voltage is supplying a MOD 60 counter through a Schmitt trigger. The clock frequency:

Dark box design is similar to thevenizing an unknown analog output voltage. The black box represents:

Which of the following is one of the reasons a digital clock project is a valuable learning tool for project development?