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Walter Shawlee, the Sovereign of Slide Rules, Is Dead at 73
DNYUZ ^ | February 8, 2024 | N/A

Posted on 02/24/2024 6:28:03 PM PST by DoodleBob

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Personally, I’m an HP12C guy, with a penchant for Excel and aging but popular computer languages. I miss Lotus 123. I respect anyone who makes old tech sing. RIP sir.


1 posted on 02/24/2024 6:28:03 PM PST by DoodleBob
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To: DoodleBob
Walter knows everybody in the slide-rule racket

That is a lie. I have three and I never heard of the guy.

2 posted on 02/24/2024 6:35:29 PM PST by AndyJackson
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To: DoodleBob

I taught myself to learn to use a slide rule when I was 14. My father gave me a book about it.


3 posted on 02/24/2024 6:37:39 PM PST by marktwain (The Republic is at risk. Resistance to the Democratic Party is Resistance to Tyranny. )
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To: DoodleBob

We’ll still use slide rules when we have starships…

4 posted on 02/24/2024 6:41:23 PM PST by fishtank (The denial of original sin is the root of liberalism.)
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To: fishtank

Spock had to go old school because the Romulans blew an EMP.


5 posted on 02/24/2024 6:43:28 PM PST by DoodleBob (Gravity's waiting period is about 9.8 m/s²)
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To: DoodleBob

Don’t know much about algebra.
Don’t know what a slide rule is for.


6 posted on 02/24/2024 6:43:28 PM PST by ClaytonForester
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To: DoodleBob

In college, about 1985...our math professor made us use a slide rule...even though calculators were available. He wanted us to learn to approximate in our head...


7 posted on 02/24/2024 6:43:29 PM PST by Sacajaweau
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To: DoodleBob

I have two P12Cs. Awesome calculator; I’ve used one my entire adult life. Never got the hang of slide rules.


8 posted on 02/24/2024 6:44:30 PM PST by Romulus
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To: DoodleBob

My father had one but I never learned how to use it. I came of age just as the handheld calculator became available.


9 posted on 02/24/2024 6:45:43 PM PST by AlaskaErik (There are three kinds of rats: Rats, Damned Rats, and DemocRats.)
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To: DoodleBob

Still have the aluminum K&E I bought in high school (1960) with its’ leather scabbard. We nerds used to carry ‘em on our belts like gunfighters.

Along with my collection of mechanical watches, vernier calipers, and other such non-electronic nonsense.


10 posted on 02/24/2024 6:46:35 PM PST by Chad C. Mulligan
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To: Sacajaweau

When I was in 1st grade, my Dad has a big calculator on his desk…it did MDAS.

When nobody was looking, I’d turn it on and do my math homework.

I got caught, I think by my Mom, and I basically said “well if Dad can use it, why can’t I?”

I don’t remember her answer. Thankfully, Mom didn’t tell Dad but basically told me to never do it again.

Eventually I memorized my multiplication tables and learned how to do long division on paper. Indeed, doing things with pencil and paper is the BEST way to learn.


11 posted on 02/24/2024 6:50:20 PM PST by DoodleBob (Gravity's waiting period is about 9.8 m/s²)
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To: DoodleBob

I still have my slide rule given to me when I was in junior high. I also have the nuclear effects slide rule.


12 posted on 02/24/2024 6:51:58 PM PST by kosciusko51
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To: Romulus
It can’t be beat. And if you bring it to any meeting with your Finance Dept, you get immediate street cred.


13 posted on 02/24/2024 6:52:37 PM PST by DoodleBob (Gravity's waiting period is about 9.8 m/s²)
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To: DoodleBob

I have the same one, circa 1988. I have only replaced the batteries twice. My only beef is that it doesn’t have trig functions.


14 posted on 02/24/2024 6:57:14 PM PST by crusty old prospector
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To: DoodleBob

Agree with you. I had to teach my granddaughter the times table....AND....how to WRITE her name. She still prints everything...except her name. She’s 30. I’m 80.


15 posted on 02/24/2024 6:58:57 PM PST by Sacajaweau
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To: DoodleBob

I bought a mint HP12C at a garage sale for $5, with pouch & manual and was actually working in mortgage finance when I did. I kind of wish I had the motivation and attention span to learn how to use it.


16 posted on 02/24/2024 7:01:53 PM PST by Attention Surplus Disorder (The Democrat breadlines will be gluten-free. )
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To: Sacajaweau
Professor Tom Yeh has posted online exercises on how to calculate what a generative AI does. This is his example of a transformer. It is extremely eye-opening, and demystifies these bots.


17 posted on 02/24/2024 7:02:46 PM PST by DoodleBob (Gravity's waiting period is about 9.8 m/s²)
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To: Attention Surplus Disorder

I have an 11C that I bough in 1985. Still works quite well.


18 posted on 02/24/2024 7:03:10 PM PST by Conan the Librarian (Conan the Sailing Librarian)
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To: DoodleBob

e to the u du — e to the x, dx!
Cosine! Secant! Tangent! Sine!
3 point 1 4 1 5 9!
Integral! Radical! mu, dv
Slipstick! Slide rule! MIT!

— Traditional MIT cheer


19 posted on 02/24/2024 7:05:19 PM PST by Stosh
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To: Romulus

I used a TI-59 with the printer in my business until I retired about 10 years ago. I still have a software TI-59 on my desktop computer and on my cell phone. Best calculator ever. I have a few slide rules, I loved them but the TI-59, boy that did some great work and they were programmable, you could store 1000 commands and store them on a magnetic strip so that you could run different programs for different calculations you were doing. It is true I could have done the same thing, even better in just about any programming language and there were some calculations I would program to do but for the most part every day calculations for heating a variety of materials in a particular amount of time, the old TI was fantastic.

Yes I still have a few slide rules but mostly they are gathering dust. Every once in a while when I bump into one I will do a few calculations and then put it back. They were great when that was all we had but now we have better.


20 posted on 02/24/2024 7:05:37 PM PST by JAKraig (my religion is at least as good as yours.)
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