Hello,
I just completed one of the projects I've been working on for
my calculator Web page and thought it would be of interest
to some of you. I've published a directory of desktop
calculators that were manufactured from 1964 through
approximately 1975. There are nearly a thousand machines listed
in the directory. Included in the directory is information
such as manufacturer, model, display type, # of memories,
and decimal setting. There is also a "notes" column where I
list if a machine has other capabilities such as programmability
or scientific functions. There were quite a few high-end
programmable calculators made during this time, many of
which were advertised as being more cost-effective than
mini-computers of the timeframe. Examples would be the
HPs, the Olivetti Programma series, Compucorp machines
(also marketed by Monroe and Dietzgen), some Sharp machines,
and a few others.
The directory is linked from the "desktop calculators" section
of my Web site.
It was quite a lot of work to pull all this together, I
hope some of you find it useful and enjoyable.
Regards,
Alex Knight
Calculator History & Technology Archive Web Page
http://aknight.home.mindspring.com/calc.htm
Eric Smith <eric(a)brouhaha.com> wrote:
> Does the D.C. Hayes modem for the S100 bus use the same "Microcoupler" as
> their early Apple ][ modem?
Hmm, how many FCC type IDs are there between them? I don't know, but
I always figured that was the reason both modems used the same
Microcoupler box -- Hayes only had to get one device FCC type-accepted
that way.
-Frank McConnell
This manual (Chapter 10) describes a 'ROM Cartrudge II' that is provided as
a plug-in option in the HX-20. The ROM Cartridge II supplies from 8k to 32k
bytes of data. Data in the externam ROM memory unit is in the forrm of a
read-only ROM file. Data are read from the external ROM memory unit via
i/oports using an addressing counter and a shift register....
port info follows.....
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
>[HX20]
>
>> The microcassette drive was actually removable. I don't know if Epson
>> ever released anything else that could plug into that space besides the
>
>The hardware manual mentions (and gives a schematic for) an EPROM
>cartridge that will fit up there. I've never tried to build one, but it
>looks possible.
>
>-tony
>
>
At 06:44 PM 11/7/98 -0600, Doug wrote:
>On Sat, 7 Nov 1998, Joe wrote:
>
>> Thanks for the info. I'd heard some rumors of some one cutting a CD ROM
>> of HP docs but I didn't know who was doing it.
>
>Yup, Dave will have one:
> http://www.hpmuseum.org/software/swcd.htm
I've spoken to Dave about this and am doing some scanning to include
on the CD ROM. Right now the effort is mostly targeted at the HP
pocket calculator models. Unfortunately (or fortunately, depending
on your point of view) there are far fewer collectors of "big iron"
HPs like the 9800 series than of the pocket models. But there will
be a lot of good material for the HP programmable calculators,
including many/most of the application packs for machines like
the HP65, HP67, and HP97.
>
>And Jake Schwartz will have another:
> http://www.waterw.com/~jake-s/ppccdrom.htm
This is an excellent set of CD ROMs. It has the issue of HP Journal
that covers the HP9100, and the articles from later HP Journals
that cover HP pocket calcs., as well as all the issues of HP65
Key Notes and HP Key Notes that cover HP's pocket programmable
calculators. It has all the issues of the PPC Journal (including
HP65 Notes, PPC Calculator Journal, and PPC Computer Journal).
I haven't looked at all the issues yet but I'd guess that the
PPC Computer Journal gives pretty good coverage to things like
the HP75 and HP85 computers.
For $20, it's a great deal. I think Jake said there's over 7000
pages of scanned material on this 2-CD ROM set.
Regards,
Alex
Calculator History & Technology Archive Web Page
http://aknight.home.mindspring.com/calc.htm
Doug,
At 06:44 PM 11/7/98 -0600, you wrote:
>On Sat, 7 Nov 1998, Joe wrote:
>
>> Thanks for the info. I'd heard some rumors of some one cutting a CD ROM
>> of HP docs but I didn't know who was doing it.
>
>Yup, Dave will have one:
> http://www.hpmuseum.org/software/swcd.htm
Yes, I looked at his website and found all that stuff. His ISP had
gotten so slow that I had quit looking at his site.
>
>And Jake Schwartz will have another:
> http://www.waterw.com/~jake-s/ppccdrom.htm
Yes, I got three of the first sets from Jake at the HP conference in
Portland.
>
>> Have you gotten the HP 110 stuff yet? I haven't. I E-mailed the guy and
>> he said that he'd send the stuff to you but hasn't sent mine yet.
>> OOPs! Forgget that. I just read your second message and I see you got the
>> stuff. How does it look?
>
>It looks fine, but the guy took so long to ship that I was able to find
>two addtional HP 110's in the meantime.
Yeah, they seem to be pretty common and there's not much interest in them.
More trading fodder! Anybody
>have a spare 9100 they want to trade for a laptop or two?!
You wish!!!!!
Joe
>
>-- Doug
>
>
Good day, all...
I picked up an Epson HX-20 this weekend (with a rather thick and complete
technical reference (the HX-20 Answer store is now open...)) The odd thing
is that it *doesn't* have a built in microcassette. It did however come
with the a cassette interface cord ala ear/mic/aux for which the machine is
jacked. All refs (including aforementioned tech ref) to this machine I've
seen show the integrated microcassette... Any info? anybody?
Mike: dogas(a)leading.net
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
>Is that the hardware techref or the software techref? I've got the former
>(thick book with schematics, diagnostic instructions, lubrication chart,
>etc), but I also have a lot of software questions.
I think that is the 'latter' one Tony... Its kind of slim on schematics
and fat on rom routines etc...
the 'Chapters at a Glance' are:
1. Intro, 2. Keyboard, 3. LCD, 4. Cass & mCass, 5. mPrinter, 6. rs-323, 7.
Serial, 8. Floppy, 9. Bar Code Reader, 10. Rom Cart II, 11. Misc. i/o, 12.
Load Module, 13. Slave MCU, 14. Virtual Screen, 15. Menu, 16. Monitor, 17.
Basic, 18. Mem Maps (cha-ching, 19. Math Routines
Appendexes:
a. real-time clock, b. mem map quick ref, c. slace cpu mem map, d.
subroutines, e. variables
- Mike: dogas(a)leading.net
