Relay computers

From: Vintage Computer Festival <>
Date: Fri Sep 24 14:17:05 2004

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."

Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger      
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Received on Fri Sep 24 2004 - 14:17:05 BST

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