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Antique Calculator Collection
These calculators are all either engineering marvels, or at least have Nixie Tubes :-)
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This HP-9100B was donated to me by a buddy who got it at a garage sale for $10; this
would have been around the mid-1990 timeframe.
It is seems to operate properly, but I don't have any magnetic cards for it.
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This Tektronix 909 calculator was donated to me by the same guy who donated the HP-9100B.
He found this one at the Stittsville Flea Market, and paid about $5 for it.
This machine is functioning, but some of the Nixies flicker, and a few don't light up at all.
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This Monroe 630 calculator was donated around April 2003 from California, by a buddy who saved it from the scrap
heap at his local high school where he is a teacher.
This machine is not functioning -- it displays a "0" but doesn't react to any of the keys.
Unfortunately it's a "one chip wonder" so I doubt I'll be able to fix it :-(
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