Calculator Quirks #004 The litronix 2230 is an attractive LED machine with square root, memory and power-on from one of the regular momentary-contact keyboard...
Bob Patton
patton@...
Oct 4, 2001 12:23 am
232
Hello! You may add also Russian calculators: Elektronika B3-34, MK 52, MK 54, MK 56, MK 61 They all has ERROR (bir chars) message for error. Additional...
Sergei Frolov
frs@...
Oct 4, 2001 4:27 am
233
I just came across the Sperry-Remington 663 which also uses half-sized zeroes. So it seems very much like this is a deliberate design. Still looks funny, ...
Bob Patton
patton@...
Oct 5, 2001 12:26 am
234
On Thu, 4 Oct 2001, Bob Patton wrote: }I just came across the Sperry-Remington 663 which }also uses half-sized zeroes. So it seems very much }like this is a...
Nicholas Bodley
nbodley@...
Oct 5, 2001 12:38 am
235
... In Cyrillic, I would assume. Did it look (in Cyrillic) like "EPPOP"? ===== Sometime, probably in the 1970s, when affordable LCD calcs were still new, I...
Nicholas Bodley
nbodley@...
Oct 5, 2001 5:40 am
236
Thanks Sergei, I don't get to try out many Russian calculators....
Bob Patton
patton@...
Oct 5, 2001 11:06 am
237
... Like all the early CASIO MINIs. The Sperry 663 (and all the other Sperrys) were made by Casio, FYI. Frank Boehm...
Frank Böhm / DSP
frank@...
Oct 5, 2001 1:17 pm
238
Nello Nicholas, ... No, we see "Error" (in English) on the display but "r" chars are big. See http://www.geocities.com/SiliconValley/1061/b334dc2e.htm for...
Sergei Frolov
frs@...
Oct 6, 2001 11:00 am
239
... big. (Aha! [Y]Eggog! :) ... details. Very nice-looking page! Beautiful design. The text did run beyond the right "border", though in Opera (browser) 5.12,...
Nicholas Bodley
nbodley@...
Oct 6, 2001 8:24 pm
240
I have the following Marchant rulers for sale. Thought I would offer them to the group before I placed on e bay. Many of these ruler have never been used. ...
Ernie Jorgenson
ejorgens@...
Oct 10, 2001 6:03 am
241
Hi Ernie, Great, I would like ALL of them. What will the cost be, including shipping to Israel? The "United States Postal Service" has an on-line site, where ...
Erez Kaplan
calcmach@...
Oct 12, 2001 9:33 am
242
The Novus 835 ($10 in 1980) is a shirt-pocket 9v LED machine with a combination memory. It has both MS, for direct store, and M+,M- keys. This is a useful...
Bob Patton
patton@...
Oct 23, 2001 1:31 am
243
I recently got a TI PC-100C thermal printer. I have a PC-100A that I bought with my original TI-59. Does anyone know what are the differences between the A, C...
Bob Patton
patton@...
Oct 27, 2001 11:53 pm
244
... Bob, IIRC, the PC-100A could be used with the SR-52A (TI's first mag card calculator), the SR-56 (a 100-step programmable), and the TI-58/59 calculators....
The "A"-version could also be used with the TI 52SR and maybe other programmables/calcs that TI made. The "C" version was for TI 59/58 calc's only Regards, ...
I collect old calcs, and found this one recently at an estate sale... Melcor 590 I cannot find any info on the company... Can anyone give me any info...? Is it...
Bill: Thanks for the vote of confidence on our book. Mike et all: If you would like a copy of the book, you can buy it from amazon or you can order from me...
Guy Ball
mrcalc@...
Nov 15, 2001 6:39 am
251
... The best way to find such things seems to be to watch eBay. But on the off chance that someone here might have extra Casio gear, I'm looking for the Casio...
Here's a cute test for a scientific calculator. (Let ^ represent exponentiation.) Compute 2.25 ^ 3.375 and subtract 3.375 ^ 2.25 from it. The exact answer is...
Bob Patton
patton@...
Nov 16, 2001 3:34 am
253
... That really is cute. Here's an informal proof: First, 2.25 is 9/4 and 3.375 is 27/8. So log (2.25 ^ 3.375) = 27/8 log (9/4) = 27/8 (log(9) - log(4)) = 27/8...
Oh joy! While we were passing through a very small town in an isolated rural area my wife spotted a new thrift store. I popped in and there among the...
Bob Patton
patton@...
Nov 19, 2001 1:58 am
256
A demo for 8-digit 4-function calculators that impresses casual users is to quickly produce 1.2345678 (or 1.2345679 with rounding) via a built-in constant...
Bob Patton
patton@...
Nov 19, 2001 2:03 am
257
Since some interest was expressed: The function x^y = y^x is continuous for x > 1. Most solutions are transcendental but it has a set of rational solutions of...
Bob Patton
patton@...
Nov 20, 2001 4:04 am
258
... Does this mean that y = ((t+1)/t)^t, x = ((t+1)/t)^(t+1) for t = 1,2,3,... also holds? Bob...
Received this message for posting to the oldcalcs group. Hope someone can shed some light on Joe. I can't get in touch with him anymore either. Message...
To Everybody: I'm not a spokesman for Joe, but I do know that he is doing OK but most likely not checking his email. If you need to get in touch with Joe, I...
