The thyratrons connected to flip-flops in the "1" position will now fire. Since grid 1 is normally biased negative, changes in the PHA flip-flops before or after the store pulse will not affect the thyratrons. Thyratrons conduct through a 50K plate resistor until selected by a stepping switch connected to the punch coils, punching five bits per punch cycle. In six punch cycles the binary word and address are punched, then the thyratron memory is cleared, and the unit is ready for another channel. The channel is advanced when both paper-tape punch and PHA printer have completed the cycle.
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