Digital System Projects Using HDL Questions

• In the frequency counter, what is the function of the Schmitt trigger circuit?
• In a digital clock application, the basic frequency must be divided down to:
• Which is not a step used to define the scope of an HDL project?
• In the frequency counter, when is the new count stored in the display register?
• In the digital clock project, what is the frequency of the MOD-6 counter in the minutes section?
• 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?
• In the digital clock project, when does the PM indicator go high?
• Which is not a step in strategic planning for HDL development?
• In a frequency counter, what happens at high frequencies when the sampling interval is too long?
• In the keypad application, just after the 4 ms mark the simulation imitates the release of the key by changing the column value back to F hex, which causes the d output to go into its Hi-Z state. On the next rising clock edge, what happens to dav?
• In the frequency counter, the pulse width of the enable signal is very critical for taking an accurate frequency measurement.
• A frequency counter is a circuit that can measure and display the frequency of a signal.
• In the digital clock project HDL, the 1 pps signal is used as a synchronous clock for all of the counters' stages, which are synchronously cascaded.
• In the digital clock project, the 60 Hz signal is sent through a Schmitt-trigger circuit to produce sine wave pulses at the rate of 60 pps.
• One CASE construct inside another CASE construct is called a do-loop.
• In HDL when a circuit is simulated on a computer, the designer must create all the different scenarios that will be experienced by the actual circuit and must also know the proper response to those inputs.
• The wave-drive sequence of a stepper motor has more torque and operates more smoothly than the full-step sequence at moderate speeds.
• One of the first steps in any HDL project is to define its scope by naming each input and output.
• In HDL, one of the strategies used in strategic planning is to find a way to test each piece of the project.
• Top-down design means that we start at the highest level of the hierarchy, or that the entire project is considered to exist in a closed dark box with inputs and outputs.