Gadzooks! Type "HP CAlculator" into Ebay and you see dozens of these antiques going for over $100! My old HP-11C (a most noble calculator indeed) is going for $145. I paid less than that for it new. Alas, it finally died of intermittent buttons and I buried it in a small plot in the back yard with a modest headstone next to other beloved family members. I now have an HP 30 non-RPN calculator that frankly, inhales vigorously. -- Lawrence Lile Russell McMahon Sent by: pic microcontroller discussion list 01/23/2003 08:59 PM Please respond to pic microcontroller discussion list To: PICLIST@MITVMA.MIT.EDU cc: Subject: Re: Nostalgia - HP Journal Library / Museum of HP Calculators > > HP65 - 1984 personal pocket computing technology. > > So a 1984 HP calculator is considered a museum piece!? Anything 20 years old could so qualify if it was classic enough in conception and execution to start with. HP often manage well on both regards. > I own two > calculators that I both use regularly, and they are both HP 11C from 1982. > Great calculators. I hope they never break because the new ones don't > seem to have the same convenient horizontal format. I've owned an HP21, 25 and 65 (in that order, the 65 was second hand and I sold it to fund buying my first PC, which I personally imported from the famed Golden Building in Hong Kong :-) . I used a 35, 45 & 55 extensively (long ago) The sole HP35 in the engineering school (bought by a PhD student) was the envy of all when it came out - the common tool at that stage was a slide rule! Nowadays I use whatever comes to hand for basic calculations (el cheapo scientifics cost about $NZ12 = $US6 equivalent) and a spreadsheet or other program as required. Still wouldn't mind a Reverse Polish Notation calculator though - definitely a superior number processing system. RPN is THE most keystroke efficient way to process a numerical problem. In comparison the various attempts at "algebraic logic" are clumsy and inefficient. Russell McMahon -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.