Some interesting documents (2)



#2

Hi all,

Here is a 2nd batch of links to some (hopefully) quite interesting
documents (in PDF format, for best reproducibility), most of them related to HP calculators and calculators in general, with one or two math-oriented ones thrown in for good (even humorous !) measure.

The idea is that you get some interesting materials to read and even try on your HP this weekend,
if you feel like it. I would suggest printing them on paper instead of reading them off the screen, for maximum visual comfort, graphic quality, and usability. Best regards from V.


A True Calculator


From Henry Brigss to Modern Calculators


A Mathematical Seduction


CORDIC: Elementary Function Computation using Recursive Sequences



Chance and Data: New opportunities provided by the graphics calculator


Finding Optimal Solutions to Rubik's Cube Using Pattern Databases


An Imaginary Tale: The Story of Sqrt(-1)


Modeling and Rendering Escher-like Impossible Scenes


#3

Great !

But, Where is the first release? Thanks


#4

Hi Alberto,

The first release was posted July, 2. Unfortunately, it's too 'old' to still be among the last 500 messages in the Forum, but too 'new' to be available in the Archives, so it's essentially unavailable till it makes it to the next Archive.

That being so, I re-post here those links, for your convenience. Bear in mind that they were related to topics discussed back then (HP-12C Platinum's CPU, uses (if any) for the hyperbolic functions, financial uses (if any) for trigonometric functions, etc) so that's why they are so heterogeneous. Nevertheless I'm confident you'll find at least some of them interesting. Best regards from V.

All the following are PDF documents, for optimum reproducibility:

HP-12C Platinum's CPU:

Data Sheet

Confirm Sheet

Product family (12C's CPU = SPLB20D)

Hyperbolic Functions Theory and Applications:

Superstructure Engineering (Suspension Bridges)

Curves in Traditional Japanese Architecture and Engineering

Lecture on the exponential function, the trigonometric functions and the hyperbolic functions

Hyperbolic functions in the art of M.C. Escher

Trigonometric Functions Applications in Financial/Business:

The Discrete Wavelet Transform with Financial Time Series Applications

Some HP-related Datafile articles by me [shameless plug]:


Long Live the HP-12C !

HP-12C Tried & Tricky Trigonometrics

HP-12C's Serendipitous Solver

Long Live the HP-11C !

Long Live the HP-15C !


Edited: 18 July 2003, 4:42 a.m.


#5

Quote:
The first release was posted July, 2. Unfortunately, it's too 'old' to still be among the last 500 messages in the Forum, but too 'new' to be available in the Archives, so
it's essentially unavailable till it makes it to the next Archive.
Actually, your first message is in the Archives; I found it yesterday. You can find it right here.
#6

Hi,

Thanks! I find these texts very interesting. Bye.

#7

All outstanding stuff, Valentin. Thank you for posting them.

Harold Thimbleby's comments about the "referential opacity" (I would term it "instruction set non-orthogonality") of a selection of algebraic calculators is spot on. I was pleased to note that my aging 41C passed that test with ease. On the other hand, I found my son's HP-6S a nightmare, and could not raise any protest when his school recommended a Casio for use in maths classes. The Casio is no worse than the HP, as far as I can see.

Best,

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

#8

Valentin:

Would you consider to put the articles in the Articles Forum, avoiding the "short life" condition of messages in the Messages Forum?

PS: I haven't had time to follow the links, but the fact that they come from you is a warranty of quality.


#9

Hi, Andrés:

Andrés posted: "Would you consider to put the articles in the Articles Forum, avoiding the "short life" condition of messages in the Messages Forum?"

If you refer to the 2nd batch of links, all of them point to PDF documents not authored by me, so I am not entitled to submit them for the Articles Forum.

If you refer specifically to the links I posted to some of my Datafile articles (the "Long Live ..." series for instance), I would be willing to submit them to the Articles Forum, but they are in PDF format. Some months ago, I exchanged some e-mails with this Forum's gentle provider and maintainer, David Hicks, re the possibility of creating a new section in MoHP specifically to upload PDF documents, but he then argued that that would make it quite difficult if not impossible to access them from PDAs, and that was it.

However, I feel that PDF is the right format for the articles, as it allows full reproducibility, including fonts, tables, graphics, everything like it originally appeared in print, the user would in fact get a real facsimile of the original. Much of this would be lost if uploaded as HTML or plain vanilla text, and I'm not for it.

Should David reconsider the possibility of actually creating this new section, I would certainly obligue by submitting a number of my articles, both past and future, in PDF format.

"PS: I haven't had time to follow the links, but the fact that they come from you is a warranty of quality."

Thank you very much, you're far too kind. Matter of fact, both Luiz and you are probably the 'kindest' of all Forum visitors in general (IMHO, of course, not to belittle anyone else). Myself, I'm regrettably much more on the 'rude' side, so noone should expect too 'flowery' a language from me ... :-)


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