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Overlays on HP-18C
05-25-2017, 01:26 AM
Post: #3
RE: Overlays on HP-18C
Chary made overlays for many of the financial machines; probably the earliest was the 12C, however since that model was around so long, it's hard to tell. Overlays for the 12C could have been introduced 5 years before the 18C was launched, or 20+ years after the 18C was discontinued...

But I would guess that the 12C versions were first.

Thanks for sharing that Matthias, I've not seen 18C overlays before.

--Bob Prosperi
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Messages In This Thread
Overlays on HP-18C - HP-Collection - 05-24-2017, 09:07 PM
RE: Overlays on HP-18C - SlideRule - 05-24-2017, 10:06 PM
RE: Overlays on HP-18C - rprosperi - 05-25-2017 01:26 AM

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