Questiona about hp 50g
Ben
takes a while to compute the answer, then tries to display the ENTIRE
number on a single line of display. If you use 'right shift' '> num' it
then displays 9.99999999E499. And never again will it try to compute
400! unless you reset the calculator and redownload the ROM. In the
first case, you get the first digits but no order of magnitude. In the
second case, you get no digits but some awareness of the order of
magnitude. Unusable in both cases.
It takes EXACTLY twice as long to compute the integral of (1+Sin[1/x])
from .1 to 1 as it does on my TI-89. Were talking 15 to 30 minutes
here. Yet mt TI processor is a 12 mhz and the HP is 75mhz, go figure.
Lastly, I found no easyway to purge all variables on the HP 50g without
having to type up a long list of each variable I wanted to purge. The
TI isn't much better, but at least it allows me to simply chechbox each
variable I want purged, then mass purge them all without having to type
long variable names.
I also owned a 48g and a 48gx and a 32sii and a 42s.
To me it looks like HP isn't even trying to compete seriously anymore.
The designers and programming remind me of SuSe Linux trying to push a
linux based graphing calculator.
I just don't see that HP takes their calculator line seriously anymore.
Which as an owner of the 32 and 42 makes me really sad.
Zeno
<b...@benwoodward.com> wrote:
Mine computes it again fine without having to be reset....
ROM 2.09
CNA618xxxxx
I do agree that the 499 limitation on the exponets of aproximations of
large exact numbers is not a good thing.
Virgil
> Lastly, I found no easyway to purge all variables on the HP 50g without
> having to type up a long list of each variable I wanted to purge. The
> TI isn't much better, but at least it allows me to simply chechbox each
> variable I want purged, then mass purge them all without having to type
> long variable names.
There are several easy ways to purge multiple names from the current
directory, provided none of them are directory names, at least on 48's,
and in RPN mode on 49's and the 50.
Probably the easiest is to purge a list of names:
(1) put list delimiters in the line editor (Key left_shift +)
(2) press the soft key for each non-directory name you wish to
purge, putting that name in the list
(3) press ENTER to put the list of names to be purged on the stack
(4) execute PURGE.
And you do not have to type a single name.
Jean-Yves Avenard
Ben wrote:
> I noticed that after resetting the 50g, if you type 400!, the calc
> takes a while to compute the answer, then tries to display the ENTIRE
> number on a single line of display. If you use 'right shift' '> num' it
> then displays 9.99999999E499. And never again will it try to compute
> 400! unless you reset the calculator and redownload the ROM. In the
It's like saying: I put my TI89 into approximate mode and now I can't do
exact calculation anymore.
You could start by reading one or two pages of the manual, where
approximate and exact mode are discussed.
There is no need to restart the calculator, reflash it etc..
When you press Right Shift NUM, Press: Right Shift: release shift, press
ENTER.
If you press RightShift hold it and press ENTER you've put your
calculator in approximate mode, so it will not calculate the exact value
of 400!
> To me it looks like HP isn't even trying to compete seriously anymore.
sigh...
Remind me the maximum of an exponent of a TI again ?
Jean-Yves
John H Meyers
This is a clear case of rushing into new things,
jumping to wrong conclusions (and wasting energy)
without reading or learning, which is surprising,
considering that even the previously owned 48G and 48GX
do some of these things exactly the same way, although older
32Sii and HP42 are of course totally different systems.
"Exact" integers are *supposed* to display as "digits-only";
\->NUM converts to "Approximate" reals (the sorts of numbers,
with a mantissa and a separate magnitude,
familiar from all the other older calcs, which have the same range),
and of course 400! overflows that range (and also generates
more digits than could possibly fit on the screen,
no matter how displayed).
"If at first you don't succeed, read the instructions" :)
[r->] [OFF]
Tanya
>Lastly, I found no easyway to purge all variables on the HP 50g without
>having to type up a long list of each variable I wanted to purge. The
>TI isn't much better, but at least it allows me to simply chechbox each
>variable I want purged, then mass purge them all without having to type
>long variable names.
I do it by LS+ then just press each variable to be purged. This
creates the list. then right arrow past the closing curly brace, call
the catalog, alpha Q and back scroll to get to PURGE. Enter then
removes all variables in the list. Far easier to do, than to
describe!
Miguel
There is still another way:
Just chose LS, FILES, then chose the directory where the variables are.
When you see the list of variables, press ENTER, this will select the
first variable and go to the next. Keep pressing ENTER till the last
variables you want to erase. After that, just execute PURGE in the soft
menu. That is flexibility!!!
Regards,
Miguel
Gene
Ben wrote:
> I noticed that after resetting the 50g, if you type 400!, the calc
> takes a while to compute the answer, then tries to display the ENTIRE
> number on a single line of display.
> To me it looks like HP isn't even trying to compete seriously anymore.
> The designers and programming remind me of SuSe Linux trying to push a
> linux based graphing calculator.
Gene: I note you're selling the hp50g on ebay (post is also to this
group). Perhaps you should rush out and buy another expensive item,
open it up, try using it without reading any documentation, and then go
ahead and sell it on ebay right away. it is a great way to lose money.
Seriously, you are either 1) a TI-troll trying to stir up the HP
community despite claiming to have owned previous HP calculators, or 2)
someone who should really sit down and relax and read the manual.
Had the same problem with an electron microscope once. No matter how
much light I shined on my subject, it didn't produce an image. People
tried to tell me some foolishness about having to plug it in, etc., but
I didn't need to listen...I had used previous microscopes before and I
knew how they worked.
Gene
John H Meyers
> Lastly, I found no easy way to purge all variables on the HP 50g
> without having to type up a long list of each variable I wanted to purge.
Oh, that's the easiest; just type CLVAR,
or press ON+A+F all together, and choose NO.
[r->] [OFF]
Scott Chapin
"Tanya" <fab...@forever.com> wrote in message
news:9qfse2pdhdornooti...@4ax.com...
I keep a programm object in my home directrory that purges the list of those
variables. I have it in my custom menu so i can call it up instantly in any
directory, and purge all instances in that directory. I don't purge EQ, as I
typically save equations all over the place...lol.
Scott Chapin
Joe Horn
> Gene: I note you're selling the hp50g on ebay ...
This is not the first time that a new HP calculator owner blamed their
inability to understand it on HP, and ran off to sell it. Here's a post
from 1991 (!) about it:
http://www.hpcalc.org/hp48/docs/humor/airplane.txt
The funny side of stupidity: http://www.nbc-links.com/stupidity.html
-Joe-
Ben
WELL,
I'm gonna stick it out. My main problem is the lack of a comprehensive
manual. The existing manual is just too sparse.
TW
> I'm gonna stick it out. My main problem is the lack of a comprehensive
> manual. The existing manual is just too sparse.
All 2000+ pages of it?
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&cc=us&product=351775&dlc=&
They aren't linked in yet from the 50G page on HP's site. Sad that you
can't get them already printed.
TW