errors due to paralax. The clear analog device is also available on a glass substrate.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/Gametronics_Conference_%281977%29_-_p181a.png/400px-Gametronics_Conference_%281977%29_-_p181a.png)
Figure #1
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Gametronics_Conference_%281977%29_-_p181b.png/400px-Gametronics_Conference_%281977%29_-_p181b.png)
Figure #2
To demonstrate that not all electronic games are TV games, a couple of skits at Gametronics involved mock three-dimensional electronic dolls. Lisa, posing as an electronic doll, popped from a gift box.
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