I am offering reprints of the Friden 130 and 132 CRT Calculator manuals on ebay if any one is interested. Have added lots of manuals to our website:...
Ernie Jorgenson
ejorgens@...
Dec 5, 2002 4:02 am
369
Hi, As many other calculator collectors I have a special interest in the early Busicom models because of their rarity and historical value. Despite searching...
Richard Schatz
rschatz@...
Dec 5, 2002 2:58 pm
370
Hello! The faked Casio fx-3600PV has internals from Sharp EL-506P. A simple scientific calculator instead of programmable. See details at...
Sergei Frolov
frs@...
Dec 8, 2002 10:39 am
371
From a collection of oldcalcs algorithms. CASC 005 The Laguerre cosine approximation is good to 4 digits for 0 to 90 degrees and is exact at 0, 45, 60 and 90. ...
Bob Patton
patton@...
Dec 12, 2002 2:39 am
372
Hello: Does anyone out there have information on the Mutifix Calculator? I recently bought one, and while it seems to work, I would like to know more about it....
Quirk #015 - one-celled creatures The TI-2550 III (fluorescent) has the same sized case and battery pack as the SR-50 (LED). The battery pack, however, is...
Dear fellow collectors, Thanks for all input to my little survey. Here is an updated list of Busicom manufactured calculators and my guess how to interpret the...
Richard Schatz
rschatz@...
Dec 21, 2002 9:05 am
376
Sorry - cut and paste was last time only waste... Joerg...
Bob, Unbelievable ! You got it indeed - this is a TI-1050 based Citation. Could you scan it again, please ? It is from such a high value for my Museum ! Please...
Bob, Unbelievable ! You got it indeed - this is a TI-1050 based Citation. Could you scan it again, please ? It is from such a high value for my Museum ! Please...
Bob, Some weeks ago you wrote us about the one-cell creatures – a.k.a. calculators using only one AA-sized battery. Unfortunately my comments never arried...
Thank you Joerg for your interesting and , as usual, technically concise information. Where do you get all this stuff?...
Bob Patton
patton@...
Jan 9, 2003 1:28 am
381
Quirk #016 Memory recall only? The Casio Memory-8S (fluorescent) certainly catches your attention at first glance. The only memory key is MR! It doesn't...
Bob Patton
patton@...
Jan 28, 2003 4:14 pm
382
Terri Crouch contacted me regarding a very nice Wales 'glass sided' adding machine with a stand and with the original operator books. She would like to sell...
Ernie Jorgenson
ejorgens@...
Jan 30, 2003 3:58 am
383
I have come across a most unusual (perhaps unique) Texas Instruments SR-40 that must be a prototype. The paper label on the back has no serial number and ...
Bob Patton
patton@...
Feb 9, 2003 9:53 pm
384
Need immediately pictures of in and outside... Joerg ... From: Bob Patton To: oldcalcs Sent: Sunday, February 09, 2003 10:50 PM Subject: [oldcalcs] TI SR-40...
Thanks to all for your interest. Bruce, I mentioned the Sebastian chip test casually in an earlier posting, but may not have called it exactly that. Mike...
Bob Patton
patton@...
Feb 11, 2003 2:58 am
386
Wow - this is the greatest find since the TI-88 ! Another project finished but not introduced to the market. Why ? The TI-30 project killed the low-entry...
The SR-40-001P has a full 8-digit mantissa plus 2 exponent digits, each of these with a separate sign for a total of 12 displayable positions. It appears to...
Bob Patton
patton@...
Feb 13, 2003 1:36 am
388
Bob, Just for your information: There is no relation between YOUR SR-40 and OUR SR-40's. The SR-40 known are nothing else than nicer looking TI-30. Could you...
Some more oddities from the TI executive's estate: A normal looking SR-51-II with no bottom side identification except a small gold sticker in the serial...
Bob Patton
patton@...
Feb 18, 2003 1:19 am
390
I forward this for those who might wish to visit the web site and for our administrator to comment. I joined oldcalcs before it moved to Yahoo....
Bob Patton
patton@...
Feb 18, 2003 3:48 am
391
Hi all Quite often I get an old calculator (any make) and the LED display on powering up will display just a row of decimal digits and will not change to any...
A further nifty calculator from the TI executive is an SR-10/11 looking calculator with a transparent plastic case. The only identification is what's molded...
Bob Patton
patton@...
Feb 22, 2003 11:33 pm
394
... powering up >will display just a row of decimal digits and will not change to any key press. ... all makes >and models, and how to repair etc. or at least...
Bob Patton
patton@...
Feb 24, 2003 2:00 am
395
It's nice for oldcalcs to work. So what do you do about wired-in rechargeable cells? You can drive many of the old machines with DC through the adapter jack....
Bob Patton
patton@...
Feb 24, 2003 2:00 am
396
Please help: Hello, and thanks for the response... When I sign on, as you say, it shows "pending membership". Someone has to approve the membership before I...
Hello Everyone, It's the moderator here finally. First off apologies for the delay on getting onto this issue. There have been a couple of factors involved. ...
