Re: HP-41C how to determine if it's halfnut ? Message #12 Posted by Garth Wilson on 25 Feb 2005, 2:00 a.m., in response to message #1 by Pascal
According to Richard Nelson's and Jeremy Smith's article entitled "HALFNUT-- AN INTERNALLY IMPROVED HP-41C,CV,CX" in the CHHU Chronicle V2N4 Jul/Aug '85, pages 9-11, HP started the Halfnut project in mid-83. At the time the article was written, it was expected that cv and cx halfnuts would start shipping to dealers in Sep '85, and that the 41c Halfnut would only be used for service of returned 41c's. So If you have a real 41c Halfnut, it would have to be from having been serviced after the older stock (Coconuts) had already been used up. BTW, if a 41 is not a Halfnut, it's a Coconut, not a Fullnut, according to HP's internal project names.
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