HDTenEightyP/NetNews huggingface dataset:
From: payner@netcom.com (Rich Payne)
Subject: Re: Volts vs. amps
Organization: Netcom - Online Communication Services (408 241-9760 guest)
Date: Tue, 26 Jan 1993 23:32:46 GMT

In article <C1DB0J.G7u@ns1.nodak.edu> jgreff@plains.NoDak.edu (Jason Greff) writes:
>
>This debate shouldn't really take place on this board, but since it
>started here....
>
>I'm sure you've all heard that it's the amps that kill you, not the volts.
>That's the truth.  It takes as little as .1 Amps, regardless of voltage. 
>The debate about the resistance of your body making the current or voltage
>dependent really doesn't matter.  There are such things as current
>sources, in which case the voltage is dependent.  

There are no current sources. What you are referring to are current
regulated voltage sources. They are limited in their regulation by the
input voltage. there is nothing in nature that wants to put out 5 amps,
there are cells which put out 1.5 and 3 volts. generators and alternators
are also voltage sources, with internal resistances. The only other devices
which come to mind are feul cells and bi-metallic strips. Care to guess.

>                                                  There are such things as
>voltage sources, in which case the current is dependent.  

No, voltage sources are all we have. 

>                                                                The only
>question is whether a lightning bolt is a current source or a voltage
>source.  I'm not sure.  It would seem that the potential between the cloud
>and the ground would be a voltage source, but the bolt itself might be a
>current source (consider that a person struck by lightning may not be the
>primary target - similar to grabbing any conductor with current flowing in
>it).

The bolt happens when the voltage exceeds the breakdown voltage between the
cloud and [the] ground. I am not aware of lightning having any special
current characteristics, like a fixed or constant current. Since it is
just static discharge, I am not even sure that it is valid to model it as
either a voltage of current source.
 
>I don't want the above to make me sound like I think I'm an expert - I'm not. 
>It's just my opinion.
 
Lots of opinions flying about. So I'll add mine again.
 
>-- 
>Jason Greff          North Dakota State University - Fargo, North Dakota
>
>"It's better to remain quiet and be | "It's hard to be an individual while
> thought a fool than to speak and   |  you are busy trying to conform." --Me
> remove all doubt." -- Lincoln      |


Rich

payner@netcom.com


Newsgroups: comp.sys.hp48
From: d89-bga@dront.nada.kth.se (Bjrn Gahm)
Subject: Re: HP48 + modem, VT100 emu
Organization: Royal Institute of Technology, Stockholm, Sweden
Date: Fri, 22 Jan 1993 15:19:54 GMT

In article <106095@netnews.upenn.edu> mengwong@pobox.upenn.edu (Meng Weng Wong) writes:
>I just got a pocket modem today.  It plugs into the serial port with
>the help of a null modem converter, and runs on "line power." 
>Does this mean it gets power off the phone line, or off the serial port?
>
>I believe term2.bg is a VT52 emulator.  Has a vt100 emulator been written?

The term2.bg is only a dumb terminal. It cannot decode VT commands.
It understands however newline and backspace, so it can be used for simple
tasks.
The advatage of it is that it is written in ml and uses a small font so
you can see 33x10 chars on the screen.

>
>The idea is to connect to the Internet through the 48, via a modem.
>
>Ideas?

Bjrn

-- 
          Bjrn Gahm        Email: d89-bga@nada.kth.se
                            Snail: Forskarbacken 10/315
                                   104 05 STOCKHOLM
From: rrd@hpfcso.FC.HP.COM (Ray Depew)
Date: Wed, 20 Jan 1993 22:09:17 GMT
Subject: Re: HP48 to Lego Technics building set
Organization: Hewlett-Packard, Fort Collins, CO, USA
Newsgroups: comp.sys.hp48

In comp.sys.hp48, kolstad@cae.wisc.edu (Joel Kolstad) writes:

> P.P.S. -- Rumor has it that some HP digital scopes know how to play Space
> Invaders (or was it Tetris?), [...]

It's true.  They had some extra ROM space, and couldn't bear to leave it
empty.  (I mean, that would be inefficient, right?)  They couldn't fit any
"real" bells & whistles into the space, but Tetris fit quite nicely, thank 
you.  We look upon such frills as "programming exercises."  You all look 
upon playing -- er, utilizing -- them as "characterizing the system."

ObShamelessPlug:
It's the 54601/02 series of scopes (the ones that only cost $1000 and 
look/feel like analog scopes), but I don't remember the key sequence to
bring it up.  See your dealer for more info.

See ya, Joel.
Ray Depew
Integrated Circuits Business Division
Hewlett Packard Co, Fort Collins, Colorado
rrd@hpfiqa.fc.hp.com
(No, I don't make scopes either.  But my customer does!)
From: akcs.fatri@hpcvbbs.cv.hp.com (fatri)
Newsgroups: comp.sys.hp48
Subject: Stringwriter
Date: 18 Jan 93 15:40:02 GMT


Hello everybody, for those interessted, I uploaded
a new version of StringWriter library.

It contains commands to easilly change the font and a command
that set key assignement to use the library more easilly.

You can find it at seq.uncwil.edu in the /hp48/Uploads/FAT
directory, it name is StrWrtV3.Z

Fatri. (fatri@turing.u-strasbg.fr)
Newsgroups: comp.sys.hp48
From: makovsky@scsud.ctstateu.edu (MAKOFSKY,STEVEN)
Subject: Memory Card Differences
News-Software: VAX/VMS VNEWS 1.41    
Organization: Southern Connecticut State University - Computer Center
Date: Sun, 24 Jan 1993 01:12:00 GMT

Well.. I've recently got everything working properly with my HP48sx, and 
now seem to be in dire need of more memory. I've seen serveral different
manufactures memory available, is there any extreme differences that I should
be aware of, or are they all generally the same? Thanks!

Newsgroups: comp.sys.hp48
From: robdoss@harrier (Robert C. Doss)
Subject: C compiler for HP48
Reply-To: robdoss%nvcc.uucp@groucho.sonoma.edu
Organization: Napa Valley College
Date: Wed, 20 Jan 1993 17:26:51 GMT

	I was recently showing my HP48 to our network system administrator  
Chris Osborn.  He asked me if it were possible to program in assembly  
language on the HP48.  When I told him that I did not know I began to do  
some research on the subject.  A few days later, after I discovered that  
it was indeed possible to program in assembly language on the HP48, I told  
Chris of my discovery.  He then said something to me that really hit home  
and is the reason why I am posting this article.  He said that because we  
can program in assembly language on the HP48, it could be possible to  
write a C compiler.
	It never dawned on me before, but it seems possible that there  
should be a way to write a C compiler for the HP48.  Are there any C  
compilers out there for the HP48 ?  If not are there any programmers up to  
writing a C compiler for the HP48 ?  I myself could not even begin to  
write such a program.  I would not know exactly what form a C compiler  
would take.  I suppose it is possible to have the compiler in a library  
card that would take C text from the stack and compile it.  Of course it  
is probably equally feasible to conceive an interactive C developer for  
the HP48 on a PC where the programmer types in the source code into an  
ASCII text file and the compiler would then assemble it and sent it to the  
HP48 as a binary transmission.  Either method would considerably make  
programming on the HP48 significantly easier.  And if a C compiler could  
be written, compilers for other languages such as FORTRAN, Pascal, BASIC,  
etc. could conceivably also be written.  Because of vast number of  
programs that have been written in any of these languages, the number of  
available programs on the HP48 would significantly improve.
	I would like to hear any ideas and comments you might have on this  
subject.  Please feel free to E-mail me at the address below.  Also keep  
in mind that this is my first article I have ever posted on any newsgroup;  
so please excuse any mistakes I may have made in newsgroup protocol.

--
Robert C. Doss, Engineering Student
Napa Valley College
robdoss%nvcc.uucp@groucho.sonoma.edu  NeXTmail ok
From: stevev@miser.uoregon.edu (Steve VanDevender)
Newsgroups: comp.sys.hp48
Subject: Re: Number Base conversion with decimals... The HP CAN'T DO IT!!
Date: 28 Jan 93 02:55:15 GMT
Article-I.D.: miser.STEVEV.93Jan27185515
Organization: University of Oregon Chemistry Stores
NNTP-Posting-Host: miser.uoregon.edu
In-reply-to: mal2n@fulton.seas.Virginia.EDU's message of Wed, 27 Jan 1993 21:04:14 GMT

I have seen relatively little software that handles radix
conversion of non-integers.  The HP 48 doesn't have built-in
programs to do this but it wouldn't be hard for you to write
programs to do it; after all, you are being taught the methods
right now, aren't you?

For that matter, you could have it do bases that it doesn't
handle now (only bases 2, 8, 10, and 16 are currently supported).

I don't know why you're so surprised that the HP 48 doesn't do
non-integer radix conversions.  It is a very good calculator, but
it can't be all things to all people.

"Life is short and ROM is full." -- Bill Wickes
--
Steve VanDevender 	stevev@greylady.uoregon.edu
"Bipedalism--an unrecognized disease affecting over 99% of the population.
Symptoms include lack of traffic sense, slow rate of travel, and the
classic, easily recognized behavior known as walking."
From: bmury@engr.UVic.CA (Brian  Mury)
Subject: Re: ROM version?
Reply-To: bmury@engr.UVic.CA
Organization: University of Victoria, Victoria, BC, Canada
Date: Thu, 21 Jan 93 21:28:20 GMT


In article 727136578@yacht, quentin@ee.fit.edu (Quentin) writes:
>How can I tell which ROM version I have in my HP-48sx?

Press ON-D, then backspace, then eval. You'll get a message which includes the revision.
From: slp9k@cc.usu.edu
Newsgroups: comp.sys.hp48
Subject: Re: Taking exams?
Date: 21 Jan 93 16:07:56 MDT
Organization: Utah State University

> 
> Hm..., six feet? Is that the distance between you and your neighbour during
> your next exam :-)? But more seriously: this will be the next *major* problem
> with calcs like the HP48 during exams.
> 
	This is just a rumor I heard, so maybe someone at BYU can confirm it.
	I do not attend BYU, nor do I know electronics so don't ask me how
anything was done.
	The rumor went something like this:

	The reciver on the HP is limited through hard wiring.  So some students
At BYU bypassed the wiring and were sending answers across the room to each
other during a test.  Somehow or other the professor caught them and the use of
HP-48's has been banned for all tests at BYU.

	This raises the question of whether this can really be done.  If so I'm
afraid that all schools would have to ban the 48 during tests.  Isn't
technology great?

-- 
Disclaimer:  I don't care

********************************************************************************
Darrell Fuhriman          *     "Oh, just like an orange cloud of light, 
SLP9K@CC.USU.EDU          *      that just blows right out of it.  Wow!"
********************************************************************************
From: rose@bucknell.edu (philip rose `94)
Newsgroups: comp.sys.hp48
Subject: Re: Volts vs. amps
Date: 27 Jan 1993 17:50:16 GMT
Organization: Bucknell University, Lewisburg, PA
Distribution: world
NNTP-Posting-Host: albiero.cs.bucknell.edu

In article <C1G52r.HK2@ns1.nodak.edu>, jgreff@plains.NoDak.edu (Jason Greff) writes:

|> I've got training as a generator mechanic and I am an electrical engineering
|> student specializing in power.  Everyone I've ever talked to says current
|> is the killer.  Specifically the minimum is 100 milliamps, it may take
|> more depending on the situation.
|> 

As a fellow EE student,  I have considered your objection.  One of the end
results of electrocution is the condition that the body's nerves no longer
conduct electricity.  Nerves must conduct electricity so that the brain can
send electrical signals to the rest of the body.  Nerves are very thin and 
can be modeled as a very thin wire.  It is true that a normal wire melts if
you run too much current through it, but the wire wouldn`t melt if it was a 
superconductor.  Since nerves are more like wires than superconductors, the
resistance of the nerve causes a voltage drop that is proportional to current.
The power dissipated in the nerve is the product of the voltage drop and the
current.  This power is dissipated in the form of heat.  If this power
dissipation is high enough, the nerve will reach a temperature at which it 
will start to cook.  The rest of a person's body can cook the same way, but
the nerves usually cook first because they are so thin.  Nerves that are cooked
(well done) don't conduct electricity anymore.  At this point, the brain can't
send signals to vital organs such as the heart and the person dies.  So it is
more accurate to say that power dissipation is what kills.

Sometimes when you see someone who has survived getting struck by lightning,
the person doesn't have use of their legs because the nerves that go to the
legs have been burned but the nerves that go to the vital organs haven't been
burned badly enough so that they don't conduct.

-----------------------------------------------------------------------------
Phil Rose
rose@coral.bucknell.edu
From: pu001b@uhura.cc.rochester.edu ( pedro miguel ugalde)
Newsgroups: comp.sys.hp48
Subject: run stuf?
Date: 25 Jan 93 21:21:42 GMT
Organization: University of Rochester - Rochester, New York


I got some programs, libries, grobs, and them when I load them into memory
they just stay in the stack. how do I run them? or do I transfer them in
ascii mode instedad? please help.
thanks.
Newsgroups: comp.sys.hp48
From: kevin@rodin.wustl.edu (Kevin Ruland)
Subject: Question about ID references and <-LIB->
Organization: Center for Optimization and Semantic Control, Washington University
Date: Sun, 24 Jan 1993 16:42:50 GMT

If I write a library and reference the other programs using ID,
will <-LIB-> convert these references to the more reliable ROMPTR?

Thanks for the help

Kevin Ruland
kevin@rodin.wustl.edu
Newsgroups: comp.sys.hp48
From: cyoon@utdallas.edu (CHANG K YOON)
Subject: Re: Rev. J difference, STRANGE!
Organization: Univ. of Texas at Dallas
Date: Tue, 26 Jan 1993 04:51:57 GMT

In article <1jse6mINN6aq@usenet.INS.CWRU.Edu> cj531@cleveland.Freenet.Edu (Ali Momeni) writes:
>
>Yesterday, I evaluated this sum on an E and a J: 5*x^2*ln(x)/sin(x) as x
>goes from 1 to 100.  I got two very diffenrent answeres (-1700ish and
>19000ish).  
>What's goin' on?
>
>ali.  momeni@vu-vlsi.ee.vill.edu

Not sure....  I tried your equation on my revision E and this is what I
got.

DEG:  8088177.07545
RAD:  2584500.25973
GRAD: 8422210.25973

I'm getting very different results than yours.  Here's the equation as
seen from my stack:

SUM(X=1,100,5*X^2*LN(X)/SIN(X))

SUM of course is the summation sign.

-- 
-------------------------------------------------------------------------------
Chang Yoon                            |  "Our children know EVERYTHING, we
cyoon@utdallas.edu                    |   have cable." - Ms. Penbroke, C 'n C
-------------------------------------------------------------------------------
From: rose@bucknell.edu (philip rose `94)
Newsgroups: comp.sys.hp48
Subject: Re: Need prog. to find complex roots of arbitrary function
Date: 23 Jan 1993 16:35:57 GMT
Organization: Bucknell University, Lewisburg, PA
Distribution: world
NNTP-Posting-Host: adhara.cs.bucknell.edu

In article <1jpoocINNpip@aurora.engr.LaTech.edu>, ramos@engr.LaTech.edu (Alex Ramos) writes:
|> 
|> Is there any program that will find complex roots of an arbitrary (i.e.
|> not necessarily a polynomial) function?
|> 
|> 
|> Any clues appreciated. 
|> 

****  Please  Post  *****


-------------------------------------------------------------------------------
Phil Rose
rose@coral.bucknell.edu
From: ramos@engr.LaTech.edu (Alex Ramos)
Newsgroups: comp.sys.hp48
Subject: Re: Rev. J difference, STRANGE!
Date: 24 Jan 1993 16:25:05 GMT
Organization: Louisiana Tech University
NNTP-Posting-Host: ee02.engr.latech.edu
X-Newsreader: TIN [version 1.1 PL8]

Brian S Badger (badger@cs.arizona.edu) wrote:
: In article <1jse6mINN6aq@usenet.INS.CWRU.Edu> cj531@cleveland.Freenet.Edu (Ali Momeni) writes:
: >
: >Yesterday, I evaluated this sum on an E and a J: 5*x^2*ln(x)/sin(x) as x
: >goes from 1 to 100.  I got two very diffenrent answeres (-1700ish and
: >19000ish).  
: >What's goin' on?

: I would say double check that the rad/deg modes on the two calculators are the
: same.   :-)

He did something wrong. This what I got on a rev E:

radians mode:	2.585E6
degrees mode:	8.088E6


--

/* ramos@engr.Latech.edu                     
                                            
                Fala-se Portugues, tche!     
		English spoken here.
*/ 

Newsgroups: comp.sys.hp48
From: sbateman@vx9000.weber.edu (Steven Bateman)
Subject: Re: C compiler for HP48
News-Software: VAX/VMS VNEWS 1.41    
Organization: Weber State University CS Department
Date: 25 Jan 1993 16:01 MST  

I was planning to make a 'c' compiler as well, however the code generation
would be difficult, and the compiler would probibly require a 128k card of it's
own... So I am considering instead leaving the code generation phase out, and
just having a c compiler that could check for errors.  You could then upload
the source code to your pc and compile it... better than nothing since I can't
afford a laptop yet.  A previous poster was correct in stating that the HP48
is not the right platform for ansi-c.  Any 'c' compiler for the hp would be
different from ansi-c except for the basic syntax.

Most of my intrest in a 'c' compiler for the 48 would be that I wouldn't have
to learn to program in saturn assembly, but my intrest faded when I realized
that I would have to learn saturn to code the compiler anyway.

good luck...

Steve Bateman
Sbateman@cc.weber.edu

Newsgroups: comp.sys.hp48
From: qmdbms@gsusgi2.gsu.edu (Brian Schott)
Subject: TODO deleting list items?
Organization: Georgia State University
Date: Mon, 25 Jan 1993 20:57:35 GMT


How do I sort a TODO list without sorting the list name?

How do I delete items from a TODO list?

Thank you, in advance.

(B=)
Newsgroups: comp.sys.hp48
From: kolstad@cae.wisc.edu (Joel Kolstad)
Subject: Re: Exam mode in version J (var lock?)
Organization: U of Wisconsin-Madison College of Engineering
Date: 23 Jan 93 14:53:59 CST

In article <1993Jan23.192650.21609@netcom.com> payner@netcom.com (Rich Payne) writes:
>
>I have a battery. I measure the voltage with a balanced bridge, so essentially
>no current flows. How is this possible since voltage is a result? In fact,
>how are batteries possible? 

Well, Rich, I agree with you here.  Since voltage is really just
the potential energy gained or lost by a charged particle moving in an
electric field.  (Although any potential function is only unique to within
a constant, of course.)

>No voltage, no current.

In general, yes.  (One silly exception would be gravitational
attraction -- place an electron next to a black hole. :-) )

>Said current will never flow without some applied voltage.

In an ideal superconductor, said current will flow.  Getting any useful
work out of said current requires a potential difference.  Not to mention
that real superconductors aren't _quite_ ideal.

Our discussion here should move to e-mail or perhaps
sci.electronics.what_the_heck_is_going_on_in_this_universe. :-)

						---Joel Kolstad
From: dcampbel@zeus.calpoly.edu (Duncan Campbell)
Newsgroups: comp.sys.hp48
Subject: Re: Volts vs. amps
Date: 26 Jan 93 23:25:32 GMT
Organization: California Polytechnic State University, San Luis Obispo

In article <1k2150INN3ct@coral.bucknell.edu> rose@bucknell.edu (philip rose `94) writes:
>
>I'm sorry, but this is not the truth.  It is neither voltage or current
>alone that kills.  Power kills.  Power is the product of voltage and current.
>
orSorry, I must clarify that a bit.

Power CORRUPTS.

Current kills.

Voltage forces the current to flow through yiouour body which then kills
you.  My 2-cents is spent.
-----D
  (signature file unavailable)
Newsgroups: comp.sys.hp48
From: vair0001@student.tc.umn.edu ()
Subject: HP15C Wanted
Organization: University of Minnesota
Distribution: Nation
Date: Tue, 26 Jan 1993 18:12:35 GMT

Newsgroups: comp.sys.hp48
Subject: HP-15C - Wanted
Expires: 2/15/93
Distribution: Nation
Organization: University of Minnesota
Keywords: HP15C

I am posting this for a friend:
HP-15C Wanted.  If someone has one and wants to sell it please sent me
e-mail.
Thank you.


Newsgroups: comp.sys.hp48
From: kevin@rodin.wustl.edu (Kevin Ruland)
Subject: Troubles with the RPL48 v1.1b archive
Organization: Center for Optimization and Semantic Control, Washington University
Date: Thu, 28 Jan 1993 06:02:41 GMT

I just got RPL48 v1.1b from comp.sources.hp48.  I got the parts together
and uudecoded to get the zip file, but unzip complained of a short
header and I only ended up with 1/3 the archive.  No libs were
extracted :(  Could some who got it to work send me a simple .tar.Z.uu
file (or in cshp48ex format).

Kevin Ruland
kevin@rodin.wustl.edu
Newsgroups: comp.sys.hp48
From: smburke@magnus.acs.ohio-state.edu (Sean M Burke)
Subject: Getting -,+ in stringwriter
Followup-To: comp.sys.hp48
Organization: The Ohio State University
Date: Thu, 21 Jan 1993 15:19:26 GMT

Does anyone know how to get the - and + keys to work using the StringWriter
library?  I know they speed up and slow down the cursor, but I'd like to 
be able to use that character when I'm editing.

Is hitting ASCII and entering the ascii code the only way to do it?


-- 
Sean M. Burke   \ "Love is what goes on while you're NOT horny. . ."
Burke.63@osu.edu \_________ "You live and learn.  Or you don't live long."
bf274@cleveland.freenet.edu\______ "While we live, let us LIVE!"
IRC: Hanz (No, I won't pump U up.)\__________________________________________
Newsgroups: comp.sys.hp48
From: brianw@iat.holonet.net (Brian Walsh)
Subject: Re: Getting -,+ in stringwriter
Organization: HoloNet
Date: Fri, 22 Jan 1993 01:15:29 GMT

smburke@magnus.acs.ohio-state.edu (Sean M Burke) writes:
: Does anyone know how to get the - and + keys to work using the StringWriter
: library?  I know they speed up and slow down the cursor, but I'd like to 
: be able to use that character when I'm editing.
: 
: Is hitting ASCII and entering the ascii code the only way to do it?

+ and - work fine for me.  To get the + and - characters press the alpha
key first.

-- 
Brian Walsh          Nybble's Byte HP Handhelds free access BBS   48,95,28,etc
brianw@holonet.net   +1-708-304-0666 11pm-8am CST 8-N-1    Usenet news updates
From: 2xz5heideman@vms.csd.mu.edu
Newsgroups: comp.sys.hp48
Subject: Re: Re: Non HP RAM Cards?!?  Not for $40 for 32K, I hope...
Date: 28 Jan 1993 22:02:01 GMT
Organization: Marquette University - Computer Services
Reply-To: 2xz5heideman@vms.csd.mu.edu
NNTP-Posting-Host: vmsa.csd.mu.edu

In article <2b59c983.2378.4comp.sys.hp48.1@hpcvbbs.cv.hp.com>, akcs.dmankin@hpcvbbs.cv.hp.com (David Mankin) writes:
>Can the HP-48 use RAM cards bigger than 128K???? I've heard talk of 256K,
>and even 512K cards...Can these really be used in a 48SX??  I'd really
>like to know before I purchase a ram card.
>
>Someone who knows, PALEASE reply to this.
>
>David Mankin
>dmankin@bvsd.co.edu
>
Yes, there are 256K and 512K ram cards available.  They use a system
called bank-switching to access all of the memory. Because the 48 can only
handle 128K at a time (in each slot) you can only access 128k of the card at any
given time.I'm not sure how this affects libs when you change banks. I
 personally don't have onat this time (they cost too much), and I
find that for my purposes 1 128K card and a 128K custom ROM card are plenty. I
guess it depends on how much you want to spend.....       
                                
							Tom Heidemann