CSE/EEE 120
Lab 3 Answer Sheet
Registers, Counters and the “Brainless CPU”
Name:______________________________________ Instructor/Time:___________________________
Date:_________________________________________________________________________________
Task 3-1: Build and Test a 4-Bit D Register with Enable
Include a picture of your Digital circuit here:
Please comment on the single biggest issue you were facing when designing the circuit.
Include a picture of your (timing diagram) here:GTKWave waveforms
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 3-2: Build and Test a 4-Bit UP Counter
Include a picture of your Digital circuit here:
Please comment on the single biggest issue you were facing when designing the circuit.
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 3-3: Create a 4-Bit RAM with 16 4-Bit Words
Include a picture of your Digital circuit here:
Please comment on the single biggest issue you were facing when designing the circuit.
Did the circuit behave as expected? If no, what was wrong?
Version 1.1 Spring 2024
Please comment on the single biggest issue you were facing when simulating the circuit.
Task 3-4: Build and Test the Brainless Central Processing
Unit
Include a picture of your Digital circuit here:
Please comment on the single biggest issue you were facing when designing the circuit.
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 3-5: Simulate the Brainless Central Processing Unit
Include a picture of your (timing diagram) here:GTKWave waveforms
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 3-6: Create Additional Tests
As shown in the manual, paste the test_vals you used for each of the tests here. Be sure to note which
each set of test_vals goes with each test.
If you changed your circuit since you took the screenshot for Task 3-4, take another and replace the
screenshot in Task 3-4.
Include a picture of your GTKWave waveforms here (one per required test):
Please comment on the single biggest issue you were facing when designing the circuit.
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 3-7: Create a video and submit your report
Version 1.1 Spring 2024
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. It is recommended that you use Zoom to record to the cloud,
pasting the link and password below. 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.
Video Link:
At the beginning of your recording, say your name and the lab name. Be brief in
your recording. Submit the completed template to Canvas.
Make sure all your files are in the Lab3 directory. Create a zip file of the Lab3
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!
Version 1.1 Spring 2024
LAB 3: L R G SAB EPORT RADE 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 3-1: Build and Test a 4-Bit D Register with Enable
10
Task 3-2: Build and Test a 4-Bit UP Counter
10
Task 3-4: Build and Test the Brainless Central Processing
Unit
10
Task 3-5: Simulate the Brainless Central Processing Unit 10
Task 3-6: Create Additional Tests
10
Task 3-7: Create a video and submit your report
10
Points Lost
Lab Score (60 points total) Late Lab
Lab Score
Version 1.1 Spring 2024
