HP-21S - Is it a rarity?
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09-15-2014, 09:08 AM
Post: #32
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RE: HP-21S - Is it a rarity?
(09-15-2014 08:12 AM)ElectroDuende Wrote: I got mine, a very well preserved one, but with the slip case as only accesory, for $42 + $2 of shipping, three months ago, so I consider those 43 a very good price if manual and case are included. The manual is very rare, as it is said that this calculator was sold to educational market "in bulk" without them; anyway, it is easy to find scanned copies online. That's about what I'd be willing to pay for one these days. The one I've got was a little bit cheaper but that was quite a while ago. Quote:I have in my "TO-DO" list, a recreation of the even rarer guide for the use of the included programs (pretty difficult to use without it), that was a foldable sheet that can be teared from the manual, as the scanned copy has very little quatility to be printed. I promise to share. This would be absolutely fantastic. Those programs are amazing but incomprehensible to most. I've still not gone into any real depth studying them. I almost wish we'd done something similar to these in the 34S. The TVM code is similar and a great beginning but there is so much more that could have been done. Keystroke programs are extremely space efficient and can be very powerful. - Pauli |
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