Re: [vcf-midatlantic] Slide rules, lots and lots of 'em
Evan Koblentz via vcf-midatlantic writes:
Someone is donating 20 boxes of slide rules. He said some of common and some are rare/exotic.
We'll keep the latter and probably sell many of the former at VCF East or whatever.
Ooooo! I still have my K&E Log-Log Duplex Decitrig and case from my HS and college days. I had a second one too (a short 8" SR) but I don't recall the make. I'll need to dig it out of the mothballs. ;)
Wonder if they'll have any of the classroom sized ones -- Amy had one in their graduate office at RPI that must've been a yard long! Thanks, Jonathan On Tue, Nov 7, 2017 at 5:25 PM, Brian Schenkenberger via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Evan Koblentz via vcf-midatlantic writes:
Someone is donating 20 boxes of slide rules. He said some of common and some are rare/exotic.
We'll keep the latter and probably sell many of the former at VCF East or whatever.
Ooooo! I still have my K&E Log-Log Duplex Decitrig and case from my HS and college days. I had a second one too (a short 8" SR) but I don't recall the make. I'll need to dig it out of the mothballs. ;)
Ah a fellow RPI'er! I was one of the minions lugging my Keuffel & Esser up and down the hills of Troy, but lo and behold a piece of pocket-sized engineering beauty began to appear on campus (among those lucky, or rich enough) - the HP-35 "slide rule" pocket calculator! It would be a few calculator generations later that I could afford one (the HP-21) but I was hooked for life on HP and RPN! Nothin like em! - Glenn
-----Original Message----- From: vcf-midatlantic [mailto:vcf-midatlantic- bounces@lists.vintagecomputerfederation.org] On Behalf Of systems_glitch via vcf-midatlantic Sent: Tuesday, November 07, 2017 7:10 PM To: vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> Cc: systems_glitch <systems.glitch@gmail.com> Subject: Re: [vcf-midatlantic] Slide rules, lots and lots of 'em
Wonder if they'll have any of the classroom sized ones -- Amy had one in their graduate office at RPI that must've been a yard long!
Thanks, Jonathan
On Tue, Nov 7, 2017 at 5:25 PM, Brian Schenkenberger via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Evan Koblentz via vcf-midatlantic writes:
Someone is donating 20 boxes of slide rules. He said some of common and some are rare/exotic.
We'll keep the latter and probably sell many of the former at VCF East or whatever.
Ooooo! I still have my K&E Log-Log Duplex Decitrig and case from my HS and college days. I had a second one too (a short 8" SR) but I don't recall the make. I'll need to dig it out of the mothballs. ;)
On 11/07/2017 09:36 PM, Glenn Roberts via vcf-midatlantic wrote:
Ah a fellow RPI'er! I was one of the minions lugging my Keuffel & Esser up and down the hills of Troy, but lo and behold a piece of pocket-sized engineering beauty began to appear on campus (among those lucky, or rich enough) - the HP-35 "slide rule" pocket calculator! It would be a few calculator generations later that I could afford one (the HP-21) but I was hooked for life on HP and RPN! Nothin like em!
Right there with you on that. I use an HP-48GX at my desk, an HP-41CV on the RF bench, and an HP-49G in the calibration lab. I also have one of the SwissMicros HP-16C clones, if you don't know about those you should check 'em out. Their models emulate the processors and run the actual HP firmware. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
On 11/07/2017 10:40 PM, Dave McGuire via vcf-midatlantic wrote:
On 11/07/2017 09:36 PM, Glenn Roberts via vcf-midatlantic wrote:
Ah a fellow RPI'er! I was one of the minions lugging my Keuffel & Esser up and down the hills of Troy, but lo and behold a piece of pocket-sized engineering beauty began to appear on campus (among those lucky, or rich enough) - the HP-35 "slide rule" pocket calculator! It would be a few calculator generations later that I could afford one (the HP-21) but I was hooked for life on HP and RPN! Nothin like em!
Right there with you on that. I use an HP-48GX at my desk, an HP-41CV on the RF bench, and an HP-49G in the calibration lab.
I'm running Droid48 on my Android Phone. Still have my HP21C (I think it's a C might be an S, with the broken door). -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies
On Wed, Nov 8, 2017 at 7:10 AM, Neil Cherry via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
On 11/07/2017 10:40 PM, Dave McGuire via vcf-midatlantic wrote:
On 11/07/2017 09:36 PM, Glenn Roberts via vcf-midatlantic wrote:
Ah a fellow RPI'er! I was one of the minions lugging my Keuffel & Esser
up and down the hills of Troy, but lo and behold a piece of pocket-sized engineering beauty began to appear on campus (among those lucky, or rich enough) - the HP-35 "slide rule" pocket calculator! It would be a few calculator generations later that I could afford one (the HP-21) but I was hooked for life on HP and RPN! Nothin like em!
Right there with you on that. I use an HP-48GX at my desk, an HP-41CV on
the RF bench, and an HP-49G in the calibration lab.
I'm running Droid48 on my Android Phone.
Still have my HP21C (I think it's a C might be an S, with the broken door).
This subject of RPN, Slide Rule, Algebra, calculators never gets old for me. I've used Slide Rulers in the past, and the RPN calcs too. But my background was first in mathematics and physics before transitioning to engineering. The view of the how the role of RPN calculations and traditional mathematics coexisted was interesting. My classes involved algebra,trig,and calculus taking precedence. If you noticed the equations are never written in RPN. But RPN is easily used for computations, as on a Slide Rule - except there aren't any function keys :) You can say that RPN is more of a Low-Level [microcode] form of computing, where the actual steps can be correlated 1-1 to the actions of the ALU inside the CPU. Whereas the traditional mathematics is a form of High-Level programming language, the firmware in your computer is capable of translating the algebraic expressions to perform the RPN functions in the background. Dan
http://www.qwantz.com/index.php?comic=3132 [image: Inline image 1] On Tue, Nov 7, 2017 at 6:36 PM, Glenn Roberts via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Ah a fellow RPI'er! I was one of the minions lugging my Keuffel & Esser up and down the hills of Troy, but lo and behold a piece of pocket-sized engineering beauty began to appear on campus (among those lucky, or rich enough) - the HP-35 "slide rule" pocket calculator! It would be a few calculator generations later that I could afford one (the HP-21) but I was hooked for life on HP and RPN! Nothin like em!
- Glenn
Good stuff! Shared that to the VCFed Facebook page just now.
Dinosaur Comics is one of the hidden gems of the internet. On Wed, Nov 8, 2017 at 12:03 PM, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
http://www.qwantz.com/index.php?comic=3132
Good stuff! Shared that to the VCFed Facebook page just now.
On Tue, Nov 07, 2017 at 05:25:43PM -0500, Brian Schenkenberger via vcf-midatlantic wrote:
Ooooo! I still have my K&E Log-Log Duplex Decitrig and case from my HS and college days. I had a second one too (a short 8" SR) but I don't recall the make. I'll need to dig it out of the mothballs. ;)
I just missed being taught them. Did have my relatives slide rules in my 2016 VCF display. http://www.pdp8online.com/shows/vcfe16/pics/P1090150.shtml?small
participants (10)
-
Dan Roganti -
Dave McGuire -
David Gesswein -
Drew Notarnicola -
Evan Koblentz -
Glenn Roberts -
Joseph S. Barrera III -
Neil Cherry -
systems_glitch -
VAXman＠tmesis.org