1 Nov
2011
1 Nov
'11
12:21 a.m.
There were a few early calculators that did static
registers with
per-digit decoders and drivers, but they quickly went to
multiplexing, in the days of discrete and SSI, long before LSI and
pin-count issues.
Yeah...as a kid, I had a calculator that used ten-electrode neon tubes
("Nixies") for display, and, while I don't remember all that much of
the driving circuitry, I think it multiplexed. (It was somewhat
broken, and - hardly surprisingly in view of my skill and knowledge at
the time - the more I tried to fix it up, the brokener it got. I
wonder what became of it.)
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