New Calculator Newsletter Up on hp.com - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: New Calculator Newsletter Up on hp.com (/thread-197712.html) |
New Calculator Newsletter Up on hp.com - Norman Dziedzic - 09-25-2011 http://h20331.www2.hp.com/Hpsub/cache/580500-0-0-225-121.html
Re: New Calculator Newsletter Up on hp.com - Paul Dale - 09-25-2011 There is a mistake in the 34S's PI value in the Calculating PI article (sorry Richard).
PI SIN in radians mode gives: 2.384626433832795 E -16.
I don't know of a way to extract these however.
Re: New Calculator Newsletter Up on hp.com - Ángel Martin - 09-26-2011 Link isn't working for me...
Re: New Calculator Newsletter Up on hp.com - Dominic Richens - 09-26-2011 I think the presence of the work "cache" in the URL is the problem. Here is a link that I hope is permanent
http://h20331.www2.hp.com/hpsub/downloads/HP_Calculator_eNL_09_September_2011.pdf
Re: New Calculator Newsletter Up on hp.com - HP-12C batteries - x34 - 09-26-2011 HP-12C article by Gene Wright and Richard J. Nelson says (in the notes): "Early HP-12Cs used 3 Lithium or Silver button cells." But in the same article they say that it used Alkaline or Silver. I wonder if Lithium cells were widely available in 1981. I think that it should say Alkaline instead of Lithium in the notes' picture boxes.
Re: New Calculator Newsletter Up on hp.com - HP-12C batteries - Katie Wasserman - 09-26-2011 Then as now, there was/is no such thing as 1.5 volt lithium button cells (equivalent to the 357 silver oxide). It definitely should say "alkaline".
Re: New Calculator Newsletter Up on hp.com - HP-12C batteries - Gene Wright - 09-26-2011 Well I am certainly guilty of typos from time to time but 98% of that article is Richards and he kindly added my name for the programs shown. :-)
Those are not the best 12c games but the author of the best ones was adamant a few years ago that they only appear in Datafile, which (sadly) limits their distribution quite a bit. Oh well.
Re: New Calculator Newsletter Up on hp.com - HP-12C batteries - Dieter - 09-26-2011 The original 12C used three button cells known as LR44, SR44, A76, V76PX, S76, 357, AG13, V13GA, LR1154 and many others. These cells are approx. 11,6 mm (d) x 5,4 mm (h). They are available as alkaline, silver oxide and mercury oxide cells (now banned in most countries of the western world). There are also zink-air cells, but these don't make much sense here. All these button cells have a common nominal voltage of 1,35...1,55 Volts. On the other hand, lithium button cells usually are LiMnO2 cells with a nominal voltage of 3 Volts or even slightly more. Therefore they are usually not available in the same size as other batteries with half that voltage. I never heard of a A76-sized 3 V lithium cell. So it's alkaline and (preferably) silver oxide cells that are used in the 12C.
Dieter
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