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First reactions to buying a 32SII



#2

For many years I've promised myself that one day I'd buy a top-of-the-range
Hewlett Packard calculator but the cost has put me off. I've got Mathcad so I
don't need a graphing one, so I've just progressed from my trusty TI-66
(nothing wrong with it after 16 years) and have met that goal with a shiny new
32SII.

This is a wonderful device and I'm very pleased with it. It does everything I
need & want and more. The TI can retire gracefully.

I have two negative comments to make:

1/ The photos on the box & in the manual and the text in the manual all
indicate that the shift keys and legends are orange & blue and they appear to
be easy to read. Mine has dull green & white ones and are hard to read. The
legend backgrounds indicating those for a menu are almost impossible to see.

2/ There are four units conversions provided (and their inverses). However
there is no warning that for 95.5% of us one of them is "wrong". Only in the
USA (4.5% of the world's population) is the definition of the gallon 231 cubic
inches exactly. The rest of the world, including here in the UK, uses the
International definition which is 4.54609 l exactly. This is just over 20%
different. The only small clue is in the manual where litres is spelt "liters"
- this spelling is only used in the USA. Over five billion potential customers
could use this conversion without being aware that their answer is "wrong".
Out of all the possible units conversions they could have chosen for the four,
why did HP choose one which is unique to the USA? If they had to use that one,
why no warning in the manual?

Does HP, or anyone else, maintain a web site with useful programs for the
32SII? There must be thousands that people would be willing to share.

Edwin Russell.


#3

A website for programs for a variety of HP calculators (i.e., HP48 series and HP49G) is www.hpcalc.org. I did not see anything on it specifically for the HP32SII, but some of the programs listed might work on it after undergoing some modifications.

#4

I did not understand what you meant by 4.546091 exactly. At first I thought you were referring to liters per gallon. On my HP48G (which has a huge amount of conversions) I got 3.785412 liters per gallon.


#5

I think that's exactly the point he is making.

Try looking for UK gal on the HP48.


#6

I looked into the U.K. gallon conversion on my HP48G just before you mentioned it. My discovery is covered on another response entry.

#7

The US gallon is somewhat smaller than the Imperial gallon (what's a "UK gallon"?). This can have surprising consequences, especially in the world of aviation, where confusion over the units can lead to an embarrassing silence from the donk when one is still a few miles short of the destination.

Of course, aviation's use of mixed units (e.g. metres for runway length but feet almost everywhere for altitude) provides lots of scope for confusion, as shown by the famous incident of the Gimli Glider - an Air Canada 767 which dead-stick landed into a WW II training airfield following a mix-up over refuelling (lbs vs l, if I recall correctly).

Real unprofessional of HP not to make clear which type of gal they were using, IMHO.

Best,

--- Les [http://www.lesbell.com.au]

#8

With my 32 I store 4.54609 in memory 'L'

There is no H.MS+ function (as there is on the '67) so the following prog is in 'U':

LBL U, >HR, x<>y, >HR, +, >HMS, RTN.

As I'm an electronics engineer the functions 10^x and LOG are used more than e^x and LN so I use the shift key more than I would like.

I have some other very simple progs if you would like (e.g. lin > dB, dB > lin) but these are trivial.

There is also the hidden (well OK not hidden but undocumented) functions in non base 10 mode!

#9

I further looked in the unit coversions for volume on my HP48G. It had a separate gallon (for U.K.) in units. Converting it to liters gave 4.546092. There was still another gallon (with a "C" to the right of it). Converting it to liters gave 4.546090. These two figure are nearly identical to the figure you mentioned. If you want the largest selection of conversions your best bet would be to get an HP48G+ (128K RAM, non-expandable) or an HP48GX (128K RAM, expandable). The HP48G is no longer made. The HP32SII appears to very limited in its conversion capabilities.


#10

Frank - you say your HP48G gave 4.546092 l - this is in error as the correct exact figure is as in my first post i.e. 4.54609 l exactly (from "Standard derivation of Units in the SI system from ISO 1000 : 1992 (E)"). My research shows this International figure is exactly the same in Canada and the UK (someone please correct me if I'm wrong).

The factor used in my 32SII is the correct exact one for the USA - nothing wrong with that (from "http://ts.nist.gov/ts/htdocs/230/235/appxc/appxc.htm"). My gripe is that I bought the calculator in the UK and there is no warning that the US conversion factor is used instead of the one used in this country of sale. Perhaps a sticker should be placed in the manual of "foreign" (non USA) sales?

Thanks for all replies to my post - my first one here. I'm very impressed.

#11

I also saw the new style of the 32SII and... have to say I prefer it to the previous one !

I really like the metal trimming and the colours of the 1st and 2ns shift keys ! far better than this awful (but maybe ergonomic) orange and blue.

No the question is to know wether these coulours are as ergonomic... I guess so, but any reaction appreciated !


#12

The new colors, like the HP10B change just before it was discontinues, were more stylish, but less visable and hence functional in my opinion. Probably a marketeer's idea? Surely no industrial designer worth his/her salt would do this! Anyway enjoy it while it's here. I don't expect these to be 'round much longer. Has anyone seen a new version or colors to the HP20s?

#13

I can sympathize with your problem, I think, by imagining what it would be like were the function to convert between liters and imperial gallons on my calculator. The function would be useless to me.

You'll notice that all four unit conversion pairs on the HP32SII are English <-> metric conversions. US and Imperial units are the same (with very minor exceptions) except for the units of capacity, of which there are three basic catagories in current use: US liquid, US dry, and Imperial. (And, if I understand the HP48/49 conversions correctly, there are two slightly different versions of the Imperial gallon: UK and Canadian.)

Now, despite the USA representing only 4.5% of the world's population, I suspect that the most frequently used of those three English gallons is the US liquid gallon. After all, most of the world, as I understand it, does not use the gallon, any gallon, at all. And surely the USA accounts for far more than 4.5% of the English-speaking world. Furthermore, if I am to believe what I read in the news, gallons (or units based upon them--like pints) are falling out of commercial use in the UK and Australia. I thought they were only used for beer in the UK now (I'm ready to be enlightened). I don't believe Imperial units are used at all in India anymore (enlighten me again). That leaves Canada, which uses Imperial units on the sly despite an official conversion to metric. Here in the USA, we use gallon-based units for almost everything liquid that we buy.

Unlike the metric system, English units are not coherent. If they were, there would be no need for a special conversion function for units of capacity. You could just use the linear conversion and cube as necessary. And the fourth button could be used for some other useful conversion, like pound-force to Newtons.

I suspect HP selected the conversion most useful to the most people. Unfortunately, that doesn't help you or the many millions like you. Of course, HP should spell out in the manual exactly which conversion is implemented.


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