| 摘要 |
A sequentially addressable numerical display system wherein any of a variety of read-out display arrays such as an array of glow tubes or an AC powered load, such as incandescent lamps on a billboard can be illuminated in a predetermined serial fashion to produce a "traveling" effect. The system comprises a neon glow tube type sequencer with bi-directional capability wherein pulses applied to the sequencer cause the glow tubes to fire in either forward or reverse sequential order to thereby trigger electronic switching means, permitting corresponding sequential energization of the load.
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