Date/serial of Voyager switch to single rigid PCB?

[brouhaha]

(11-10-2022 09:09 PM)Mark Power Wrote:  I've had a look at Chuck's SST slides and he doesn't provide a date for the switchover, but he includes photos and serial numbers of examples of the original design and SST models so that could act as a starting point.

Thanks, but the change to SST was years after the switch from two-PCB to single-PCB. When Chuck gave his presentation at HHC, he mentioned (and I'm very much paraphrasing) that there were a lot of naysayers for SST, because they thought the Voyager calculators (including 12C) would be imminently and totally replaced by Pioneer models, and that the remaining Voyager sales before that happened wouldn't save enough in manufacturing cost to cover the NRE cost of the SST. Of course, time has proven the naysayers VERY wrong. The Pioneers were later to market than expected, and the 12C never went away.