Department of Physics and Computer Science
Lab Demonstrations
A formal demonstration of a circuit or piece of software shows
that the system, hardware or software, meets functional
specifications.
Length
For this course, the lab demonstrations will be 5 minutes or less
in length. Lab groups should be organized to do the demonstration
before they invite the lab supervisor to view the
demonstration.
Clarity of Objective
Clearly state what is to be demonstrated and how that will be
done.
Functional Specifications
- Describe exactly what the circuit or system is supposed to
do.
- Describe all inputs and outputs and specify, when
appropriate,
- the range of operation (input voltages, output voltages,
data values, etc.)
- the mode of operation (interrupts, polled, free-running,
etc.)
- For multifunction systems, describe each specific function as
it is demonstrated.
System Description
- Explain how the system works internally.
- State any assumptions and potential shortcomings in the
system design.
- Point out any unusual aspects of the design.
- Be prepared to explain terminology and parameter calculations
if requested by the lab supervisor.
Demonstration Considerations
- How can you make it obvious that you have addressed
the functional specifications? (e.g. display input waveform on an
oscilloscope to show voltage range involved, make meaningful test
messages "the door is OPEN", incorporate visual output
information so result is unambiguous)
- How can you minimize the amount of different things you must
do to observe the results? (e.g. have the system pre-wired
specifically in a demonstration mode, require simple commands,
etc.)
- Is it easier to test various conditions with one single
comprehensive test, or is it easier to create a "suite"
of tests?
