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Can [(hp)] calc do that???



#14

Try this if you want to get something near wolfran's Mathematica or MathLab in your pocket.

http://www.adacs.com/menu/PDAcalc_matrix.php

I've downloaded the manual of matrix calc. It is simply fantastic!.

If you want to keep the loyalty to hp, buy an IPaq 2210 ;)

Pio


#15

To me, that's not what a calculator is for, and there's no way I would trade in my HP-41cx for one of those. It's not very often that I would have any use at all for the graphing and especially for the color. Of the hundreds of programs I've run on my 41 and 71, few have been for circuit simulation or any of the high-level math the advertised product claims to bring to life.

One of the few things I've used graphing for on these little computers and had to resort to a printer was taking a large set of samples from a Phillips digital-storage oscilloscope with IEEE-488 interface, do an FFT on them, and show the results. (What the heck-- I needed to keep a hard copy anyway.) I've used them to interface to plenty of other instrumentation on the workbench as well, all at the same time. In my experience, it has been quicker to develop working test programs on the HP hand-helds than on the PC.

Of course this is not to say there's no room for improvement for the old 41 and 71 with their many plug-in modules, accessories, and wealth of software contributions from the user groups; but all these companies that think their "cool factor" addition to the line-up is going to be the cat's meow are all shooting in the wrong direction IMO. I'm sure there's a use for their product somewhere, but I as an engineer fail to find much of anything truly interesting in such products.


#16

Mr Wilson,

When I was a trainee I used only an old Casio FX-100 e some properties tables for designing steel structures and reinforced concrete slabs. When the HP41 raised(In Brazil) all(engineers) were amazed with the tech revolutions that was ocurring on these days(I didn't threw my casio neither my prop tables away) but I stepped up to a new and productive technology. After that we moved to pc's using softwares like SAP90 and today, P4 notebooks running Autocad, Strap or SAP2000 are the "entry level" technology for the structrural engineer.

How could I deal with the bills if I had to design 3k square meters plant using my beloved, but almost improducive, HP41Cv and its partner the card readar? I still have my old HP's but I can't be conpetitive with them.

And it is like that old photo. We like too much those moments but we cant go back to past.

Long live the future. It's all that was left to us ;)

Pio


#17

I cannot pretend to know your particular industry, but I am addressing the general attitude that if something is newer or flashier, it must be better. Sometimes it is. But too often the extra flash is useless for common applications, and people trying to replace the old with the new ignore the fact that a lot more thought may have gone into the old, making it more useful despite the earlier technology. It is too easy to assume that moving forward in time necessarily means moving forward in efficiency or some other virtue. Here are some examples.

I might appeal on the basis of much of what highly respected electronic industry guru and lecturer Bob Pease keeps pointing out in his columns in Electronic Design magazine. For example, he has had a series on fuzzy logic. In one early article in the series he tells how fuzzy-logic proponents used a '486 computer to demonstrate "the wonders" of fuzzy logic in a type of controller. Then he shows how you could do the same control job with a $0.23 quad op amp and a few discreets on a smaller board-- kind of humiliating for those who thought they were announcing a new and better solution, the wave of the future! (And yes, he breadboarded it to prove his point.) After the fourth article in the series, he sent the material to several fuzzy-logic experts with the challenge to show where he was wrong, if anywhere. The challenge was also published, but there have been no takers. And where is fuzzy logic today?

He has another series on PSpice, pointing out how easily people let it mislead them because they use it as a substitute for thinking instead of as just a tool and recognizing its shortcomings. He gives many true stories as examples. He laments that universities are mostly using computer simulation and teaching very little hands-on methodology, and that as a result, the graduates are not prepared for real-world design challenges. (They should be teaching both.)

He lectures all over the world, using an overhead projector instead of PowerPoint. This allows him to quickly draw or mark on diagrams as he answers questions from the audience. Is he against innovation? Of course not. He designs analog ICs at National Semiconductor-- the ICs your cell phone, new car, and DVD player rely on.

I'm on the board of a school with preschool through 8th grade. The superintendent has some kind of love afair with PCs and is trying to put them everywhere. One question I have brought up that we still don't have answers to is why did the accounting job take fewer people and less office space 25 years ago with no computers than it does today with modern PCs, a server, and all the modern software? (And no, there's not much difference in the size of the school.)

In my work I frequently lay out extremely dense, 12-layer printed circuit boards. I use a cheap, old CAD that runs under DOS. Its bugs are few and minor, and unlike other CADs I've tried, it doesn't try to tell me I can't do this or that just because it doesn't understand our unconventional but very successful methods of packing more parts in less space. This old CAD has always done the job quite well, so there has been no reason to update it. Our competitors with their newer tools have not been able to catch us.

That brings me back to these "canned-solution" products. A manufacturer may tout a long list of wonderful things the product can do; but if it's not flexible enough to let you do the things the designers didn't think of, you're out of luck. If the older technology provides a way to do the job, even if it's less efficient than the newer technology would be if it didn't lock you out, I'll take the old.

I remember looking at the adds for the first hand-held computers that were supposed to be able to recognize handwriting. The technology required to do that seemed absolutely amazing; but I also thought, "How dumb! Someone has forgotten that one reason we used typewriters before there were computers was that typing was faster than handwriting-- a _lot_ faster!" It's another example of innovation that was not an improvement. As it turned out, the Apple Newton's poor recognition of handwriting was quite a disappointment anyway.

Even though my 71 with its modules and the ton of LEX files from the user groups is far more powerful than my 41cx, I seldom use the 71. I'm glad to have it when I need it, but the 41 is more practical as a calculator. What would be on my wish list for a better 41 is greater speed and memory to make Forth and other high-level languages practical. Graphics and color are not on my wish list. If I want a bigger text display, I connect the 80-column video monitor; but the last time I did that was years ago.

I hold onto the old HPs not because of nostalgia like the old picture, but because of flexibility, interfaceability, expandability, and so on. They have no dependence on here-today-gone-tomorrow PCs or PC software either.

It may be appropriate to have both the HP and the IPaq in your arsenal.


#18

Yes, newer doesn't mean better.

My example is much lower-tech : I'm using a prehistoric Palm V PDA because all the recent machines have color screen, which require that you recharge almost every day, and synchronize very often. Actually, I don't want color at the expense of losing my data 10-20 times a year ! The old Palm V can retain its data for many weeks, maybe months. I don't recall when I last backed it up. Also, it is one of the few with an impact and scratch-resistant metal body. A no brainer.

#19

Mr. Wilson,

Good point of wiew. It shows us how we can be right even beeing at opposite corners. :-)

Thanks,

Marx Pio

#20

I would rather have the Qonos!

(VPN)


#21

#22

Q'onos?

It sounds exactly like Klingon!


#23

http://www.hpcalc.org/qonos.php


#24

Umm... thanks, and very cool page for Hydrix you posted. It gives lots of information on their planned calculator. Alas, there is no info on the inspiration for the name! I think most of you guys know but won't admit that you know that Q'Onos is the Klingon homeworld. Boy, I still can be a kid!

#25

Or put Linux on your PocketPC (or use the Sharp Zaurus) & download GNU Octave. This is free & is a lot closer to matlab than that program.


#26

"Or put Linux on your PocketPC (or use the Sharp Zaurus)
& download GNU Octave.
This is free &
is a lot closer to matlab than that program.

URL, please?ยจ
'VPN'


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