EE 231
Lab 9: T-Bird Taillights Implemented as a Synchronous Counter


The rear turn signals for old Thunderbirds had a distinctive pattern in which four segments were illuminated sequentially. For example, when the right turn signal was turned on, the right rear taillight would go through the following sequence:

This can be thought of as a counter which counts the sequence (Note that "0" occurs twice in each sequence)

..., 0, 0, 8, 12, 14, 15, 0, 0, 8, 12, 14, 15, ...

  1. T-Bird Taillight Implementation

    Implement, simulate and test your design in a programmable chip. You may input your design as a graphical .gdf file or a text .tdf file.

  2. Testing your T-Bird Taillights

    Connect the four outputs from the T-Bird circuit to four of the LEDs on you breadboard. With a slow clock rate, have a TA confirm that your taillights work correctly. Increase your clock speed, and verify your design with the logic analyzer.

    OPTIONAL BONUS (+10%) - Demonstrate the left and right turn signals for part 2 (above).

Oct. 2000
Copyright 2000, New Mexico Tech