Quirk #17 - Old ways are best At our local small town post office one of the servers is an older gentleman. Right on the counter he keeps and uses a dirty,...
Bob Patton
patton@...
Jun 10, 2003 12:22 am
443
On Mon, 9 Jun 2003, Bob Patton wrote: }Some of those old calcs really were rugged! You remind me of the little gems in the HP 2x series (Woodstock? I've...
... It's somewhat debatable whether the HP 49G can be called a "high-quality" handheld. The firmware is fairly good (though not well documented), but the...
I have been lurking for a few months now and really had nothing to say until now. I was watching this old movie called "Idaho Transfer". It's a low budget B...
On Tue, 10 Jun 2003, Eric Smith wrote: }Nicholas Bodley wrote: }> As I see it, low prices have savaged the market }> for really high-quality handhelds. H-P is...
Quirk #018 Super Mini Scientific The Lloyd's 615 is a shirt pocket, very thin, early LCD from 1978. It's what I call a mini scientific with x^2, sqrt, and 1/x...
Bob Patton
patton@...
Jun 22, 2003 1:03 am
448
Hello. This is my first post, i want to say hello to all, i have great respect for all the people who collect calculators. I starting my collection like a year...
Hi Jimmi, from Brisbane, Australia Can't help you much except to tell you that the Facit was an electro-mechanical calculator made in Sweden (I think) and sold...
Hi Jimmi I don't know if your calculator is mentioned there but you might like to check "History of the Facit Calculators" by Christofer Nöring at...
David Green
dgreen@...
Jun 24, 2003 3:10 pm
451
How do I unsubscribe from this list? ... __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com...
David - what an interesting site! Looks as though the answer for Jimmi is that the Facit 1125 was a "badge-engineered" Japanese Sharp electronic calc made...
Quirk #019 - Factorial or Fiction? Try this on a TI SR-50 or 50A: 9 [sqrt] and see 3. Then [x!] (factorial) You'll get a flashing 2. What happened? Well, the...
Bob Patton
patton@...
Jul 7, 2003 2:02 pm
454
Hello Bob, This is very interesting. Calculators, in common, round final value from big number of internal digits to fit to display. For example, on the TI-82...
Sergei Frolov
frs@...
Jul 7, 2003 5:33 pm
455
Interesting indeed. But, it gets more complicated. On a TI-36X SOLAR from 1980: 9 sqrt x! gives 6 and 9 sqrt - 3 = 0, but 3 1/x X 3 - 1 = -1e-12 yet 3 1/x x 3...
Bob Patton
patton@...
Jul 8, 2003 1:21 am
456
Latest Mini-manual list A mini-manual is a pure ASCII text document that describes the operation of a calculator to some degree. For an e-mail copy of any one...
Bob Patton
patton@...
Jul 15, 2003 12:34 am
457
Quirk #020 Novus 650 The Novus 650 is an early 6-digit, LED, RPN, fixed decimal low-cost machine. It had only 15 keys - no ENTER - you had to press C (clear)...
Bob Patton
patton@...
Jul 24, 2003 12:42 am
458
... [...] ... Speaking of Novus, the 850 model has an interesting after-market modification. As it came from the factory it was a very simple four-function ...
Bob, Please send me one example of such a manual. Regards, Joerg ... From: Bob Patton To: oldcalcs Sent: Tuesday, July 15, 2003 2:32 AM Subject: [oldcalcs]...
Hi, Does anyone have a schematic for the Bowmar 901B? All I need is the wiring from the external power connector to the board and switch including the diode id...
One of a collection of oldcalcs algorithms from the days when calculators were simple and algorithms were clever. CASC 008: exponential (e^x) For: calculator...
Bob Patton
patton@...
Sep 7, 2003 10:42 pm
464
Hi! I have found very interesting site concerning history of Russian calculators development. 1. Assembly hall. Serial production of calculators. The Kristal...
Sergei Frolov
frs@...
Sep 12, 2003 4:35 am
465
Dear Ray, Thanks for the article on the “Recollections of the Walther Company’s Venture into Electronics” – It is excellent! I posted it into the...
James Redin
james@...
Sep 17, 2003 5:57 am
466
Dear friends, I forgot to include the address for Ray’s article: http://www.dotpoint.com/xnumber/e_walther.htm Best regards, James ... From: James Redin...
James Redin
james@...
Sep 17, 2003 2:38 pm
467
(I'm quoting fully for Dr. Williams' benefit.) ... ============ Reply ============= Sergei, Many thanks for calling our attention to that Web site. It would be...
Hello! In old time, the USSR have stolen some calculator ICs topology. For example, Casio FX-2500 is the Elektronika MK-51 ( ...
Sergei Frolov
frs@...
Oct 14, 2003 2:12 pm
469
Dear friends, I received some pictures of a Monroe 600 calculator that instead of keys has a matrix of solenoids. I assume that the idea was to have some...
James Redin
james@...
Oct 17, 2003 7:53 pm
470
FYI http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3053701314&category=3294&rd=1 Mike Blum...
The Friden Computyper had an STW (or conceivably an SBT) with solenoids and low-torque rotary switches on the result dials. The calculator mechanism had no...
