This outputs a square wave at... some frequency on pins 0-3, where the pins are phase shifted by... some frequency.
Just apply power.
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | segment a | ||
| 1 | segment b | ||
| 2 | segment c | ||
| 3 | segment d | ||
| 4 | segment e | ||
| 5 | segment f | ||
| 6 | segment g | ||
| 7 | dot |