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Joined: Jan 1970
I can't believe it! The first time I used this thread, I found the answer in the first message I opened! How often does that happen?
Having purchased my HP-12C in the mid-80s, it laid dormant for most of the 90's until I very recently replaced the batteries, at which time, it came up with the comma as the thousands separator. Having search high and low to no avail for the original manual (I have the box and case, but no manual - go figure), I used it in that state until a few minutes ago.
Thank you very much for supplying the answer to this vexing problem.