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oscilloscope will generate the oscilloscope on which a Timebase of
100 ms/div. can be set again with a vertical sensitivity of 5 V/div. Select
1 on the Simulate switch, and the waveform of Fig. 13.77 will appear.
Choosing Singular under Trigger will result in a fixed display; then set
the Simulate switch on 0 to the end the simulation. Placing the cursors
in the same position shows that the waveforms for Figs. 13.76 and 13.77
are the same.
For most of the EWB analyses to appear in this text, the
AC – VOLTAGE – SOURCE under Sources will be employed. However,
with such a limited introduction to EWB, it seemed appropriate
to introduce the use of the Function Generator because of its close
linkage to the laboratory experience.
C��
Calculating the Average Value of a Waveform The absence of
any network configurations to analyze in this chapter severely limits the
content with respect to packaged computer programs. However, the
door is still wide open for the application of a language to write programs
that can be helpful in the application of some of the concepts
introduced in the chapter. In particular, let us examine the C�� program
of Fig. 13.78, designed to calculate the average value of a pulse
waveform having up to 5 different levels.
The program begins with a heading and preprocessor directive.
Recall that the iostream.h header file sets up the input-output path
Body
of
program
Heading
Preprocessor
directive
Define
form
and
name
of
variables
Obtain
# of
levels
Iterative
for
statement
Calculate V ave
Display
results
FIG. 13.78
C�� program designed to calculate the average value of a waveform with up
to five positive or negative pulses.
COMPUTER ANALYSIS ⏐⏐⏐ 563