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[[File:230_operating.jpg|thumb|350px|right|Nixies in a Type 230]] | |||
'''Nixie tubes''' are gas filled glow-discharge indicators containing a wire-mesh anode and multiple cathodes that are shaped like numerals or other symbols. | '''Nixie tubes''' are gas filled glow-discharge indicators containing a wire-mesh anode and multiple cathodes that are shaped like numerals or other symbols. | ||