340 Fastest Finger
340 : Fastest Finger
- Author: Chris Burton
- Description: Shows which button was pressed first
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 0 Hz
How it works
If when a button is pressed the output for all other buttons is low, the output is set high.
How to test
Connect buttons up to IN0-IN7 and whichever one is pressed first will set the corresponding OUT0-OUT7 high.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Button 0 | LED 0 / segment a | |
| 1 | Button 1 | LED 1 / segment b | |
| 2 | Button 2 | LED 2 / segment c | |
| 3 | Button 3 | LED 3 / segment d | |
| 4 | Button 4 | LED 4 / segment e | |
| 5 | Button 5 | LED 5 / segment f | |
| 6 | Button 6 | LED 6 / segment g | |
| 7 | Button 7 | LED 7 / dot |