Lab2Template
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Arizona State University *
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120
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Electrical Engineering
Date
Dec 6, 2023
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1
CSE/EEE 120
Lab 2 Answer Sheet
Multiplexers, Decoders and the Arithmetic and Logic Unit (ALU)
Name:______________________________________
Instructor/Time:___________________________
Date:_________________________________________________________________________________
Task 2-1: Build and Test a 1-Bit 2:1 Multiplexer
Include a picture of your Digital circuit here:
Please comment on the single biggest issue you were facing when designing the circuit.
Task 2-2: Build a 4-Bit 2:1 Multiplexer
Include a picture of your Digital circuit here:
2
Please comment on the single biggest issue you were facing when designing the circuit.
Include a picture of your simulation (timing diagram) here:
Which tests did you perform and why? The following table is an example of how to describe your test
sequence. You need to make sure to perform a sufficient number of tests to check the circuit for
eventual faults.
Test Stimulus
Test Motivation
Pass/Fail
C_1_0_C
Wanted to see C1 would be
when 1
Pass
0_0_0_F
Wanted to see C1 would be
when 0
Pass
A_1_0_A
Pass
9_1_1_9
Wanted to see C1 and C2 would
be when both are 1
Pass
6_1_6_6
Wanted to see C0 would be
when a and b = 6
Pass
3
4_0_4_8
Wanted to see C1 would be
when 0
Pass
7_0_3_A
Wanted to see subtraction
Pass
Please comment on the single biggest issue you were facing when simulating the circuit.
Task 2-3: Add 7-Segment Displays to Your Circuit
Include a picture of your Digital 7-Segment Display here:
Please comment on the single biggest issue you were facing when adding the displays.
Task 2-4: Build the NOT/NEG Circuit
Include a picture of your Digital circuit here:
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Please comment on the single biggest issue you were facing when designing the circuit.
Task 2-5: Build the AND/ADD Circuit
Include a picture of your Digital circuit here:
5
Please comment on the single biggest issue you were facing when designing the circuit.
Task 2-6: Build and Test the ALU Circuit
Include a picture of your Digital circuit here:
6
Please comment on the single biggest issue you were facing when designing the circuit.
Please complete the ALU function definition table shown below:
arith
invert
pass
Function
0
0
0
-B
0
0
1
A
0
1
0
F(15)-A
0
1
1
F(15)-A
1
0
0
Arithmetic Sum, A+B
1
0
1
A
1
1
0
A-B
1
1
1
-A
Include all pictures of simulations (timing diagrams) for each function here:
Did the circuit behave as expected? If no, what was wrong?
Please comment on the single biggest issue you were facing when simulating the circuit.
Task 2-7: Create a video and submit your report
Record a short video showing your schematics in Digital and your waveforms in GTKWave. Be sure to
show yourself in the video and show your screen. Explain how your circuit works – you need to convince
the grader you did the lab and understand it!
Copy and paste the link to your video below. Make sure
the link is working and pointing to the correct video. Remember to include the password if required.
Do NOT upload your video to Canvas or YouTube.
If your circuit is not working as expected, explain in
the video how it is not working and why you think it is not working.
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Video Link:
At the beginning of your recording, say your name, the task number and circuit
name. Be brief in your recording. Submit the completed template to Canvas.
Make sure all your files are in the Lab2 directory. Create a zip file of the Lab2
directory. Remember to turn in the zip file and your completed template on
Canvas!
Do not include the video in the zip file! This makes the file very large and you
run the risk of the zip file not uploading or taking so long to upload that your
submission will be late. Remember that the submission is dated at the time the
upload completes, not when it starts!
8
L
AB
2:
L
AB
R
EPORT
G
RADE
S
HEET
Name
:
NOTE: You submit the zip file in order to show your work.
If the zip file is not submitted there is a 5 point deduction!
Instructor Assessment
Grading Criteria
Max Points
Points Lost
Description of Assigned Tasks, Work Performed & Outcomes Met
Task 2-1: Build and Test a 1-bit 2:1 Multiplexer
5
Task 2-2: Build a 4-Bit 2:1 Multiplexer
5
Task 2-3: Add 7-Segment Displays to Your Circuit
5
Task 2-4: Build the NOT/NEG Circuit
5
Task 2-5: Build the AND/ADD Circuit
10
Task 2-6: Build and Test the ALU Circuit
10
Task 2-7: Create a video and submit your report.
10
Points Lost
Lab Score (50 points total)
Late Lab
Lab Score
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