40 Light LED
40 : Light LED
- Author: Baruas
- Description: Set the switches to get the last led to light up
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 0 Hz
How it works
In this puzzle you have to work out how to set the switches to get the last led to light up.
Your friend has been working hard to plan a vacation. (Un)fortunately, they love digital logic, so rather than print you an itinerary, they drew you the following digital circuit.
How to test
Two vacations are possible: can you use the switches to figure out where you'll go, what you'll eat, and what souvenir you'll return with?
External hardware
| Switch # | |
|---|---|
| 1 | Beach |
| 2 | Mountains |
| 3 | Ski |
| 4 | Swim |
| 5 | Ice Cream |
| 6 | Fondue |
| 7 | Tacos |
| 8 | Sun Burn |
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | IN0 | OUT0 | |
| 1 | IN1 | ||
| 2 | IN2 | ||
| 3 | IN3 | ||
| 4 | IN4 | ||
| 5 | IN5 | ||
| 6 | IN6 | ||
| 7 | IN7 |