Digital logic design traffic light

Combinational and Sequential Logic Design (15 required points+10 bonus points)

Due Oct 15 11:59pm

Purpose:

Understand and verify basic combinational logic and sequential logic theory.

Implement small practical applications.

Software recommended: Logicly https://logic.ly/ select free trial

Requirement:

Task1 (required):

Step 1. Select one of the following sequential logic circuits we learned in class and implement it by Logicly, verify the logic behavior of your implementation.

(A) 4-­‐bits binary down counter (B) 4-­‐bits binary up counter (C) 4-­‐bits shift register (SIPO or SISO or PISO or POPO)

Step 2. Select one of the following sequential logic circuits, read the reference material and implement it by Logicaly, verify the logic behavior of your implementation.

(A) Cross walk traffic light controller (reference: slide3) (B) Rotating lights controller (reference: Lab 10 of “GS-­‐DL020_manual.pdf”) (C) Lab 11 of “GS-­‐DL020_manual.pdf” (D) Lab 12 of “GS-­‐DL020_manual.pdf”

Task2 (bonus):

Modify the applications of the circuit you implemented in Step 2 of Task 1, generate the full logic description (including state truth table, output signal truth table) by yourself. Implement your circuit by Logicly and verify the logic behavior of your design.

Report:

Include following contents in your report.

Task1 (required):

1. Description of the circuit function 2. Circuit diagram for step 1 3. Circuit diagram, state truth table and output signal table for step 2 4. Screen shot(s) of your implementation in Logicaly 5. Your comments of the implementation.

Task2 (bonus):

1. Description of the circuit function 2. State truth table and output signal table 3. Next-­‐state equations 4. Complete circuit diagram 5. Screen shot(s) of your implementation in Logicaly 6. Your comments of the implementation.

Submission:

Compress your project report and Logicly files into one file (e.g.zip file). You should have several Logicly files with proper name:

e.g.

1. FengJiang_report.pdf

2. FengJiang_Task1_step1_upcounter.logicly

3. FengJiang_Task1_step2_rotatelight.logicly

4. FengJiang_Task2_rotatelight.logicly

Submit the compressed file through blackboard.

Presentation:

Excellent report(s) will be selected to present an in-­‐class presentation/demo.