Abstract
The requirements for the machine, and their fulfilment are discussed. The card transporting mechanism, including the method of feeding individual cards, and the novel stacking unit are discussed. Two systems of card sensing are described, one using photo-transistors, the other silicon photo-voltaic cells. The results of checks of card registration and the resulting card clocking system are given. The need to replace some relay logic with faster elements is discussed and some control functions mentioned.
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