> The National sonar chip (I don't remeber the code, it was in the special
> functions section in old catalogs) also expected to drive a similar
display,
> with a neon strobe.

My 1988 NS Linear Book 3, now full of obsoleted parts, suggests
LM1812

http://www.chipdocs.com/datasheets/datasheet-pdf/National-Semiconductor/LM18
12.html

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