#
(In Mano & Kime unless otherwise noted)
No new assignment. (Study for the final exam.)
Do this Problem:
8.A Consider the display described in section
8.3.3 (page 414 and following) of your text.
Note especially figures 8.48 and 8.52. For a
single 7-segment digit of this display show
the waveforms associated that will cause the
digit "7" to be displayed. Assume the artwork
shown in Figure 8.48 is used.
a) Draw (or copy) the four back-plane waveforms
in a vertically aligned style as shown in
Figure 8.52. One period is adequate.
b) Draw the two front-plane waveforms needed
to display "7". Unlike Figure 8.53 in your
text, your drawing should be vertically aligned
with the backplane waveforms. One period is
adequate.
c) Draw the waveform of the voltage across
segments a and g. These should be AC waves.
d) Based on the waveforms shown in part (c),
find the RMS voltage applied to segment a and
the RMS voltage applied to segment g.
Do 8.5, 8.6
library (enter "Universal Serial Bus" into the
"ilink" search box) or available from USB.org.
Do these short essays on USB.
Optional Reading: USB article in Wikipedia
On Friday, 3/28 the due date was changed from
4/01 to 4/03 because of Assessment Day.
Take this twenty-question quiz.
E-mail your quiz grade to DDB.
You are encouraged to repeat the quiz until
you get a perfect grade. Turn in only your
best grade.
Optional Reading
Optionally read this supplement on RS-232.
Do this problem:
Plot voltage vs. time of the Tx line in RS-232
for sending this text: "Z#" (without the
quotation marks, with a capital "Z"). Assume
±12 V signal voltages, 53 kbaud, eight data
bits, and one stop bit. Be sure to label your
axes properly. An ASCII table can be found in
many places, e.g. http://www.asciitable.com
6.3
On 3/04 problem 6.3 was added to this set.
See
PS#6
for
sol'n
Do 6.3
On 3/04 this assingment was re-assigned.
See PS#6. PS#5 was returned ungraded.
Do these problems from Peatman's text,
Design with Microcontrollers. 3.17, 3.19.
Review all "Checkpoints" (Answers are in the
back of the text. Do not turn these in. You
need the "pink" books to answer some of these
checkpoint questions.)
Do 3.18 except modify it so that a whole byte
of data is read. You may use assembly file
V3_18_TX.ASM as a starting point. The
comments in that file give necessary
information about modifications to the
problem statement. You may also use I/O file
V3_18_TX.IO in your simulation.
Unfortunately the TExaS simulator can only
simulate a total of 8 input bits in the *.IO
file and one of these must be the "Status"
signal. Thus in the file given here PC0 is ú
left disconnected and only 7 bits of data can
be controlled by the switches.
3.20 (not in the text) How does the STAF bit
in the PIOC register get set? Can you set it
with software? What instructions can you use
to clear STAF?
2.8.1, 2.11.3
Do (on page 137) 2.1
You may use file "V2_1_TX.ASM" as a starting
point. Delete the indicated comments and
insert your code. Simulate running your code
using TExaS. Turn in "TheList" file and
"TheLog" file.
Do (on page 55) 1.5, 1.6, 1.7, 1.8, 1.10, 1.24
1.25, 1.27, 1.28, 1.30