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On Tuesday, November 12, 2019 at 7:34:40 AM UTC, wrote:
I still have a slide ruler somewhere for nostalgic reasons but I (still) use fountain pens to write and I have a HP '2.5 ENTER 3 x' calculator (hp11c) for 35 years. These also never get 'borrowed'. I still have a 6in Pickett in a saddle leather sheath; it's okay for doing quick statistical checks, though it's original purpose was merely to shut up people in boardrooms while I thought: I'd slide it a little, and then point it at someone talking, and wait for him to shut up; I did the actual work on an Olivetti Programma 101/203, which were the first "personal computers", or a big stick rotary rule. And I sometimes still wear my old flying watch which has a rotary navigation slide rule around the bezels: http://coolmainpress.com/andrejutewatches.html#Navihawk Andre Jute Toolfondler |
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On Tue, 12 Nov 2019 12:03:40 -0500, Frank Krygowski wrote:
On 11/12/2019 2:34 AM, wrote: You're a wise man of excellent taste, Frank. We have the same slide rule of the same age, Never needs batteries and no one ever 'borrows' it. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 I still have a slide ruler somewhere for nostalgic reasons but I (still) use fountain pens to write and I have a HP '2.5 ENTER 3 x' calculator (hp11c) for 35 years. These also never get 'borrowed'. I wish I had my 11C. It disappeared, along with my briefcase, when I was doing some work at a local company. We suspected the temporary employee of a cleaning company. Sad thing is, the guy would never get any use out of it. He wouldn't figure out the RPN. The company bought me an HP 32SII as a replacement, but I don't like it as well as the 11C. It matters little, I suppose. I mostly use an HP-48 these days. 25c, 18c and now 48G which resides in the top desktop draw and the others in the garage. My six slide rules also reside in the bottom desktop draw and before anyone asks Six?, The Royal and a Hemi were my first and second slide rules(basic and log-log-log-etc) and I picked up four specialist electrical/electronic slide rules at clearence prices when the Uni shop cleared stock. Speculative at the time, but I've used them for earning the dollars and hobby work over the years. Yep, "RPN" was always a fun topic and a continual good reason to not loan klutzs my calculator. |
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On Wed, 13 Nov 2019 05:51:05 +0700, John B. wrote:
A bit off topic bit but does anybody know where the term "Reverse Polish Notation" originated? One assumes that if there is a "reverse" than there must be a "normal" also, although I never heard it used :-) Yep, it is the reverse of polish notation. Polish notation being operator, number, number, and RPN being number, number, operator/operand, or in the HP world where you load the stack Enter Y, Enter X, Select Operator. So, your actions effectivel follow RPN. |
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On Wed, 13 Nov 2019 00:00:21 -0000 (UTC), news18
wrote: On Wed, 13 Nov 2019 05:51:05 +0700, John B. wrote: A bit off topic bit but does anybody know where the term "Reverse Polish Notation" originated? One assumes that if there is a "reverse" than there must be a "normal" also, although I never heard it used :-) Yep, it is the reverse of polish notation. Polish notation being operator, number, number, and RPN being number, number, operator/operand, or in the HP world where you load the stack Enter Y, Enter X, Select Operator. So, your actions effectivel follow RPN. But where did the term come from? Do Polish people, for some reason, count their small change that way? -- cheers, John B. |
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John B. wrote:
On Wed, 13 Nov 2019 00:00:21 -0000 (UTC), news18 wrote: On Wed, 13 Nov 2019 05:51:05 +0700, John B. wrote: A bit off topic bit but does anybody know where the term "Reverse Polish Notation" originated? One assumes that if there is a "reverse" than there must be a "normal" also, although I never heard it used :-) Yep, it is the reverse of polish notation. Polish notation being operator, number, number, and RPN being number, number, operator/operand, or in the HP world where you load the stack Enter Y, Enter X, Select Operator. So, your actions effectivel follow RPN. But where did the term come from? Do Polish people, for some reason, count their small change that way? -- cheers, The guy that invented it was polish. Jan someone. Did you lose your google button? |
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On Wed, 13 Nov 2019 01:08:32 -0000 (UTC), Duane
wrote: John B. wrote: On Wed, 13 Nov 2019 00:00:21 -0000 (UTC), news18 wrote: On Wed, 13 Nov 2019 05:51:05 +0700, John B. wrote: A bit off topic bit but does anybody know where the term "Reverse Polish Notation" originated? One assumes that if there is a "reverse" than there must be a "normal" also, although I never heard it used :-) Yep, it is the reverse of polish notation. Polish notation being operator, number, number, and RPN being number, number, operator/operand, or in the HP world where you load the stack Enter Y, Enter X, Select Operator. So, your actions effectivel follow RPN. But where did the term come from? Do Polish people, for some reason, count their small change that way? -- cheers, The guy that invented it was polish. Jan someone. Did you lose your google button? I don't google everything :-) I had assumed that those using the term might know the origins. -- cheers, John B. |
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