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HP-35 Manual - Missing CLR
03-31-2021, 12:26 AM (This post was last modified: 03-31-2021 12:27 AM by teenix.)
Post: #1
HP-35 Manual - Missing CLR
Hi all,

This may be a rehash of old news, but...

I mentioned earlier that I was "toying" with a 50th anniversary project for the HP-35 and I was needing a duplicate key function and as such was considering the CLR button as a candidate. I opened the HP-35 User Manual, the version without the [35] on the top case label, and I'm fairly sure it has no mention of the CLR key operation at all, which seems odd. I don't have any other manuals available so I wonder if this was added in later versions.

Side note: If they condensed the notes in the manual a little bit more, it would have had 35 pages in it, instead of 36 :-)

cheers

Tony
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03-31-2021, 08:28 AM (This post was last modified: 03-31-2021 08:30 AM by AndiGer.)
Post: #2
RE: HP-35 Manual - Missing CLR
Hi Tony,

In my original red dot manual (also 00035-90008) on page 19 there is a short section on the CLEAR KEYS:
CLR: (CLEAR ALL REGISTERS) Replaces the contents of ALL registers with zero. Initial power-on has the same effect.

Next is about CL x.

BTW: Numbered pages run to 39. TOC is totally different to the 49-pager rev. 8/73 you find more often on the net.

Edit: back cover has additional white writting "a reputation for craftsmanship and service" inside the blue frame.

Andi
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03-31-2021, 01:02 PM
Post: #3
RE: HP-35 Manual - Missing CLR
Andi,

Any chance you could share a scan of that red dot manual? It appears to be notably different from the later manual(s) for the 35 and other differences in emphasis would be interesting to compare.

--Bob Prosperi
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03-31-2021, 05:22 PM
Post: #4
RE: HP-35 Manual - Missing CLR
(03-31-2021 08:28 AM)AndiGer Wrote:  Hi Tony,

In my original red dot manual (also 00035-90008) on page 19 there is a short section on the CLEAR KEYS:
CLR: (CLEAR ALL REGISTERS) Replaces the contents of ALL registers with zero. Initial power-on has the same effect.

Next is about CL x.

BTW: Numbered pages run to 39. TOC is totally different to the 49-pager rev. 8/73 you find more often on the net.

Edit: back cover has additional white writting "a reputation for craftsmanship and service" inside the blue frame.

Andi

Mine, in the back cover sleeve, also has a Service card and an Accessory order card, plus a green "HP-35 Operating manual errata" paper.

Greetings,
    Massimo

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04-01-2021, 11:10 AM (This post was last modified: 04-01-2021 11:12 AM by AndiGer.)
Post: #5
RE: HP-35 Manual - Missing CLR
(03-31-2021 01:02 PM)rprosperi Wrote:  Andi,

Any chance you could share a scan of that red dot manual? It appears to be notably different from the later manual(s) for the 35 and other differences in emphasis would be interesting to compare.

Hi Bob, all,

I have uploaded the scan here.
The accessories 2-pager is here.
(Edit: Wait the 15 seconds requested then follow the links)

Best
Andi
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04-01-2021, 12:34 PM
Post: #6
RE: HP-35 Manual - Missing CLR
(04-01-2021 11:10 AM)AndiGer Wrote:  
(03-31-2021 01:02 PM)rprosperi Wrote:  Andi,

Any chance you could share a scan of that red dot manual? It appears to be notably different from the later manual(s) for the 35 and other differences in emphasis would be interesting to compare.

Hi Bob, all,

I have uploaded the scan here.
The accessories 2-pager is here.
(Edit: Wait the 15 seconds requested then follow the links)

Best
Andi

Thanks very much Andi, much appreciated!!

For non-German readers (includes me!) click the link "Jetzt zur Download-Seite" near the middle of the page, below the boxed comments and above the video, then click the new link that comes up in the same area, and you will be prompted to download.

--Bob Prosperi
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04-01-2021, 12:50 PM
Post: #7
RE: HP-35 Manual - Missing CLR
(03-31-2021 08:28 AM)AndiGer Wrote:  Hi Tony,

In my original red dot manual (also 00035-90008) on page 19 there is a short section on the CLEAR KEYS:
CLR: (CLEAR ALL REGISTERS) Replaces the contents of ALL registers with zero. Initial power-on has the same effect.

Next is about CL x.

BTW: Numbered pages run to 39. TOC is totally different to the 49-pager rev. 8/73 you find more often on the net.

Edit: back cover has additional white writting "a reputation for craftsmanship and service" inside the blue frame.

Andi

Mine was a web download and may be incomplete as it only runs to page 36 although it looks like rev 8/73.

Page 19 has some info on Trig Functions.

cheers

Tony
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04-01-2021, 01:05 PM
Post: #8
RE: HP-35 Manual - Missing CLR
Thanks a lot for sharing the scanned manual!

In my manual - on page 7 (which correspond to page 24 in this one), there is a small error but it is correct here.
In the stack graph, "y+x" is omitted, and "y*x" is shown twice. This was again corrected in the following manuals which is e.g. available on the HP-Museum disk (revision 8/73) - the calculator I have is dated late 72.

   

Cheers,
Thomas

[35/45/55/65/67/97/21/25/29C/31E/32E/33E|C/38E/41C|CV|CX/71B/10C/11C/12C/15C/16C/32SII/42S/28S/48GX/49G/35S/DM41X]
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04-01-2021, 01:26 PM
Post: #9
RE: HP-35 Manual - Missing CLR
(04-01-2021 12:50 PM)teenix Wrote:  Mine was a web download and may be incomplete as it only runs to page 36 although it looks like rev 8/73.

Page 19 has some info on Trig Functions.

cheers

Tony

My manual (pre 8/73) is very similar - exactly 36 pages, but e.g. page 20 is completly blank, and the text in rev 8/73 is expanded with some small tips like the "Trailing zeros" on page 14, or the two notes on page 16.

There is also no mentioning of the "CLR"-key in my manual (except on the back-plate on the calculator, which is also included on the "quick-reference card").

Cheers,
Thomas

[35/45/55/65/67/97/21/25/29C/31E/32E/33E|C/38E/41C|CV|CX/71B/10C/11C/12C/15C/16C/32SII/42S/28S/48GX/49G/35S/DM41X]
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04-01-2021, 01:48 PM
Post: #10
RE: HP-35 Manual - Missing CLR
(04-01-2021 11:10 AM)AndiGer Wrote:  I have uploaded the scan here.
The accessories 2-pager is here.
(Edit: Wait the 15 seconds requested then follow the links)

Best
Andi

Thanks so much for scanning this, Andi! I had never seen this version before, only heard of its existence.

Is there any chance you could please produce a higher-resolution version? If there is an issue with file size, please let me know and I will provide a way for you to share the file.
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04-01-2021, 02:15 PM
Post: #11
RE: HP-35 Manual - Missing CLR
This was a way to tell a true Red Dot from a fake one.
I hope we will not see on eBay this manual's replicas accompanying low resolution pictures of drilled calculators...

Greetings,
    Massimo

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04-01-2021, 03:36 PM (This post was last modified: 04-02-2021 10:33 AM by AndiGer.)
Post: #12
RE: HP-35 Manual - Missing CLR
(04-01-2021 01:48 PM)Eric Rechlin Wrote:  
(04-01-2021 11:10 AM)AndiGer Wrote:  I have uploaded the scan here.
The accessories 2-pager is here.
(Edit: Wait the 15 seconds requested then follow the links)

Best
Andi

Thanks so much for scanning this, Andi! I had never seen this version before, only heard of its existence.

Is there any chance you could please produce a higher-resolution version? If there is an issue with file size, please let me know and I will provide a way for you to share the file.

In the first go I thought to upload directly here but changed my mind to host it externally. I scanned at 150 dpi but can do it again in higher resolution during easter days. IIRC my scanner can scan at 400 dpi but will be a little bit slow(er) :-). filehorst.de allows for 1 GB files. Should be enough I guess.

Edit: See below post #17

Happy Easter
Andi
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04-01-2021, 11:39 PM
Post: #13
RE: HP-35 Manual - Missing CLR
(04-01-2021 01:26 PM)ThomasF Wrote:  My manual (pre 8/73) is very similar - exactly 36 pages, but e.g. page 20 is completly blank, and the text in rev 8/73 is expanded with some small tips like the "Trailing zeros" on page 14, or the two notes on page 16.

In the copy I have, page 20 describes converting 35.17.47 to decimal degrees.

cheers

Tony
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04-02-2021, 07:31 AM
Post: #14
RE: HP-35 Manual - Missing CLR
(04-01-2021 11:39 PM)teenix Wrote:  In the copy I have, page 20 describes converting 35.17.47 to decimal degrees.

cheers

Tony

We should clarify - pdf file (I have from 2 different sources) has 49 pages and 23.278 kB in windows explorer. Page 49 holds scan copyright of HP Museum. Last numbered page of the manual itself is page 36 (pdf page 47).
Here we talk of page 20 of the manual itself i.e. page 31 in the pdf file. I also see converting 35.17.47 to decimal degrees there.
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04-02-2021, 07:44 AM
Post: #15
RE: HP-35 Manual - Missing CLR
That explains a lot :-)

cheers

Tony
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04-02-2021, 08:01 AM
Post: #16
RE: HP-35 Manual - Missing CLR
(04-02-2021 07:31 AM)AndiGer Wrote:  
(04-01-2021 11:39 PM)teenix Wrote:  In the copy I have, page 20 describes converting 35.17.47 to decimal degrees.

cheers

Tony

We should clarify - pdf file (I have from 2 different sources) has 49 pages and 23.278 kB in windows explorer. Page 49 holds scan copyright of HP Museum. Last numbered page of the manual itself is page 36 (pdf page 47).
Here we talk of page 20 of the manual itself i.e. page 31 in the pdf file. I also see converting 35.17.47 to decimal degrees there.

Hi Andi!

Yes, to clarify - I have identified at least 3 different versions of the HP35 manual so far:

* Your original red-dot manual 00035-90008, no revision date but "hole" visible on the front page, and "white" (at least on your scan) leds, 39 numbered pages.
* The ones I got, also 00035-90008, also no revision date but no "hole" and "red" leds on the cover, 36 numbered pages (one was bought on the 12 october 1972 so it must be a 1972 version or earlier).
* The third (scan from e.g. HP Museum), also 00035-90008 but revision "8/73", no "hole" and "red" leds, 36 numbered pages.

       

I will try to scan mine as well for the ones interested.

Cheers,
Thomas

[35/45/55/65/67/97/21/25/29C/31E/32E/33E|C/38E/41C|CV|CX/71B/10C/11C/12C/15C/16C/32SII/42S/28S/48GX/49G/35S/DM41X]
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04-02-2021, 10:00 AM
Post: #17
RE: HP-35 Manual - Missing CLR
Hi Thomas,

Yes the LED appear white in the original manual as well.

And here we go with the high-res version of the manual scanned at 600 dpi.

Enjoy
Andi
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04-03-2021, 04:19 AM
Post: #18
RE: HP-35 Manual - Missing CLR
The 600 dpi scan of the Red Dot manual was exactly what I was looking for; thank you so much.

I have reprocessed the images to clean it up for better viewing. I did downsample to 400 dpi, but because I saved with lossless compression instead of lossy, it's effectively similar in quality. You can download the 39 MB file here:

https://literature.hpcalc.org/community/...reddot.pdf

Interestingly, this manual is actually 2 pages longer than the later (non-red dot) manual. I have two versions of the later manual here, the first a proper scan (126 MB, 300 dpi) and the second a partial remake (22 MB, 600 dpi):

https://literature.hpcalc.org/community/hp35-om-en.pdf

https://literature.hpcalc.org/community/...remake.pdf

Interestingly, my version of the manual claims to be the same 8/1973 revision as the one in the HP Museum collection, but mine is clearly newer because the back page has a different address for HP (Pruneridge Ave instead of Wolfe Rd).
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04-03-2021, 09:26 AM (This post was last modified: 04-03-2021 09:27 AM by aurelio.)
Post: #19
RE: HP-35 Manual - Missing CLR
Thank you Eric, for the great edit job and sharing the others for comparison.
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04-03-2021, 11:54 AM
Post: #20
RE: HP-35 Manual - Missing CLR
Yes indeed, great to see these.

Red dot: "For example, did you know that one cubic mile of air weighs more than 10¹⁰ pounds?"

Newer manual: "For example, did you know that one cubic mile of air weighs more than 5 million tons?"
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