Group Members: _______________________

_______________________

EE-290 Experiment 1 -- Work Sheet

Part II

How does the logic probe respond to each of the following conditions:

Tip open?

Tip grounded?

Tip at 5.0 V?


Part III

Make a table of the frequencies of the clock on your Digi Designer as a
function of the knob setting.











Explain the difference between the two clock output terminals in terms of
wave forms.




Does the pulse light on the logic probe indicate a low-to-high or 
high-to-low transition?




Part IV

What type of inverter did you use (L, H or LS)?


Draw the voltage versus time wave forms produced by the logic pulser and
the output of inverter you connected it to.  Explain this drawing.











Part V

Draw the input voltage versus output voltage curve for each type (L, H and
LS) of inverter.  Indicate the frequency at which your measurements were 
made.










What are the observed high and low input voltage ranges for each type of chip?
Compare your results to literature values (from the data books).






Part VI

Draw the signal generator and final inverter output wave forms as a function
of time for each type (L, H and LS) of chip.











What is the approximate delay introduced by a each type of inverter?  Compare
your results to literature values.





Part VII

Plot the output current (on the horizontal axis) versus the open circuit
voltage minus the output voltage (on the vertical axis).  Determine the
internal resistance of the gate.  Do not exceed the maximum current ratings
of your chips.