| Schalter links | Schalter Mitte | Schalter rechts | grüne Lampe | rote Lampe | A | + | B | + | C | = | D | E | und wir denken oben
| oben
| oben
| dunkel
| dunkel
|
| 0
| +
| 0
| +
| 0
| =
| 0
| 0
| "null"
| oben
| oben
| unten
| dunkel
| HELL
|
| 0
| +
| 0
| +
| 1
| =
| 0
| 1
| "eins"
| oben
| unten
| oben
| dunkel
| HELL
|
| 0
| +
| 1
| +
| 0
| =
| 0
| 1
| "eins"
| oben
| unten
| unten
| HELL
| dunkel
|
| 0
| +
| 1
| +
| 1
| =
| 1
| 0
| "zwei"
| unten
| oben
| oben
| dunkel
| HELL
|
| 1
| +
| 0
| +
| 0
| =
| 0
| 1
| "eins"
| unten
| oben
| unten
| HELL
| dunkel
|
| 1
| +
| 0
| +
| 1
| =
| 1
| 0
| "zwei"
| unten
| unten
| oben
| HELL
| dunkel
|
| 1
| +
| 1
| +
| 0
| =
| 1
| 0
| "zwei"
| unten
| unten
| unten
| HELL
| HELL
|
| 1
| +
| 1
| +
| 1
| =
| 1
| 1
| "drei"
| |