Relay computers

From: Vintage Computer Festival <>
Date: Fri Sep 24 14:55:17 2004

On Fri, 24 Sep 2004, Vintage Computer Festival wrote:

> On Fri, 24 Sep 2004, Paul Koning wrote:
> > sending of ball hitting paddle or wall is done with contacts in the
> > mechanism, not with the logic itself. So the relay control has to
> Perhaps I read it wrong but the PONGMECHANIK uses logic to determine when
> the ball has hit a paddle or wall.
> "Element 2: The movements of ball and racquet, as well as the collision
> detection take place in a metal chassis under the glass cover. Each moving
> game compoent has a mechanical counterpart, which is moved by electric
> motors. When these parts collide, contacts are closed and the relays in
> the computer switch the direction of rotation of the motors."

Hmm, upon further ponderance it seems like there is a combination of
mechanical contact and logic.

Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger      
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Received on Fri Sep 24 2004 - 14:55:17 BST

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