cold-cathode counter tube

cold-cathode counter tube

[′kōld ′kath‚ōd ′kau̇nt·ər ‚tüb]
(electronics)
A counter tube having one anode and three sets of 10 cathodes; two sets of cathodes serve as guides that direct the flow discharge to each of the 10 output cathodes in correct sequence in response to driving pulses.
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