this post was submitted on 11 Jan 2025
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(page 2) 44 comments
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[–] [email protected] 55 points 4 days ago (1 children)

Found some documentation listing the two middle switches as the rounding switch (up fraction down) and the decimal switch (auto? 0 to 6 then hex?). No idea on the other two.

http://www.calcuseum.com/SCRAPBOOK/BONUS/32853/1.htm

Decimal switch: [A-0-2-3-4-6-F], Round switch: [(ArrowUp)-5/4-(ArrowDown)], Miscellaneous switch: [(Blank)-K .-(Sigma)],

[–] [email protected] 7 points 4 days ago
[–] [email protected] 7 points 4 days ago (1 children)

They seem to have some kind of function regarding how to perform or display calculations.

[–] [email protected] 4 points 4 days ago

This app isn't very intuitive

[–] [email protected] 3 points 4 days ago (1 children)
[–] [email protected] 6 points 4 days ago

OK, SOME NERD PLEASE EXPLAIN THE SWITCHES ON THIS IRL CALCULATOR APP!

[–] [email protected] 40 points 4 days ago* (last edited 4 days ago) (11 children)

Some guesses by ChatGPT:

Left Switch ("K" setting):
  • K: Likely for a "constant mode," where the calculator uses one operand as a constant for repeated >calculations (e.g., multiplying several numbers by the same value).
  • The other position is likely "normal mode," disabling this feature.
Middle Switch ("A/2/4/6" etc.):
  • This could control decimal rounding or precision:
  • "A" might stand for "automatic" mode.
  • "0, 2, 3, 4, 6" refers to the number of decimal places displayed or used in calculations.
  • "F" likely stands for "full precision," using all available decimal places.
Right Switch ("Σ" setting):
  • Σ: Likely enables a "summation mode," where the calculator automatically adds results to a running total (useful for bookkeeping or repetitive additions).
  • The other position disables this mode.

Being Swedish the "constant mode" seems likely as we often used k (for "konstant") in school math to represent a constant (e.g. for the slope of a line).

[–] [email protected] 3 points 4 days ago* (last edited 4 days ago) (3 children)

It seems to be right on the K switch. And yeah. Konstant makes sense.

The numbered switch seems to check out at least. Other than the F. F just gives me a single decimal. edit: no... Three...?

Not sure about the right switch. It adds an I in the upper right corner and it seems possible to flip between different calculation results. Maybe?

[–] [email protected] 2 points 4 days ago (7 children)

For checking F try typing in an irrational number. Like 22/7

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[–] [email protected] 6 points 4 days ago (1 children)

Did you just plug the picture into chatgpt? It's awesome if something like that works :o

[–] [email protected] 6 points 4 days ago (2 children)

Yes I uploaded the image and asked it the same question as OP

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[–] [email protected] 1 points 4 days ago

Given the available context, I'm inclined to agree with ChatGPT. I can't see those listed being anything else

[–] [email protected] 26 points 4 days ago (6 children)

Bold of you to mention chat gpt in a comment, I feel like any mention of it tends to get down voted to hell, even when it's appropriately used as you did here

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[–] [email protected] 15 points 4 days ago (1 children)

Until I saw your post, I was going to guess the A,0,2,3,4,6,F switch would switch it into different numerical bases. Like, if you wanted to do math in binary, switch to the "2" position. "0" (or maybe "A") would be base 10. "F" would be hexadecimal. But what you have definitely makes more sense.

[–] [email protected] 8 points 4 days ago (2 children)

F is 15, so that'd be weird for hex, and I've never seen base 4 or 6 used for anything, base 8 is common for some things but missing here.

[–] [email protected] 2 points 4 days ago* (last edited 4 days ago) (1 children)

I think some computers have been known to work in base 6. Or maybe I'm just confusing it with them using 6 bits. Probably the latter.

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[–] [email protected] 4 points 4 days ago

It kind of makes sense in that 15 is the last single digit in hex.

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[–] [email protected] 8 points 4 days ago (1 children)

Well, I see a round up, didn't round, or round down switch. The next one might be how many points if precision??. The last one has to do with sum vs series somehow.

That is interesting, though. Beyond me, that's for sure

[–] [email protected] 4 points 4 days ago

If I move the larger switch to A, everything is done in decimal. Maybe that's a hint?

[–] [email protected] 5 points 4 days ago (1 children)

On the top left you can change from none or K

[–] [email protected] 2 points 4 days ago (1 children)
[–] [email protected] 7 points 4 days ago (1 children)
[–] [email protected] 2 points 4 days ago (1 children)
[–] [email protected] 3 points 4 days ago (1 children)
[–] [email protected] 2 points 4 days ago (1 children)

Switch seems to work at least

[–] [email protected] 2 points 4 days ago (3 children)

Now we’re getting somewhere

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[–] [email protected] 161 points 4 days ago (2 children)

The first one lets you turn K on or off

[–] [email protected] 94 points 4 days ago (3 children)
[–] [email protected] 76 points 4 days ago

Damn, it worked.

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[–] [email protected] 9 points 4 days ago (1 children)

Looks like Facit calculators were originally manufactured in Sweden and then later Japan. No mention of that particular model on this website, however

[–] [email protected] 6 points 4 days ago* (last edited 4 days ago)

I know. I'm in Sweden. Facit was a big thing in its day. This one's made by Sharp in Japan. It's a 2102. Or maybe that's when the manual will be released.

[–] [email protected] 13 points 4 days ago (2 children)
[–] [email protected] 18 points 4 days ago (1 children)

apology for poor english

when were you when svenska calculator post drop?

i was sat at home eating IKEA meatballs when notification ring

‘Calculator switch set to K’

‘no’

[–] [email protected] 7 points 4 days ago (1 children)

It’s an older copypasta sir, but it checks out.

[–] [email protected] 2 points 4 days ago

Svenska Kalkylator.

[–] [email protected] 21 points 4 days ago* (last edited 4 days ago) (2 children)

Thanks, I already know no. means number

[–] [email protected] 10 points 4 days ago (1 children)

No means no, you misogynist pig!

[–] [email protected] 17 points 4 days ago (2 children)
[–] [email protected] 6 points 4 days ago* (last edited 4 days ago) (2 children)

Wait, holy crap, why is No. short for number? Must have to do with another language?

Edited to add, of course the answer is Latin.

[–] [email protected] 2 points 4 days ago

Pretty sure its actually the calculator language

[–] [email protected] 6 points 4 days ago

Trying to find the sum of my meme ransom please respond

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