this post was submitted on 01 Apr 2024
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Today I Learned

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And yes, TI calculators have indeed been improving, apparently.

The TI-84 Plus is a graphing calculator made by Texas Instruments which was released in early 2004. There is no original TI-84, only the TI-84 Plus, the TI-84 Plus Silver Edition models, and the TI-84 Plus CE. The TI-84 Plus is an enhanced version of the TI-83 Plus. The key-by-key correspondence is relatively the same, but the TI-84 features improved hardware. The archive (ROM) is about 3 times as large, and the CPU is about 2.5 times as fast (over the TI-83 and TI-83 Plus)[citation needed]. A USB port and built-in clock functionality were also added. The USB port on the TI-84 Plus series is USB On-The-Go compliant, similar to the next generation TI-Nspire calculator, which supports connecting to USB based data collection devices and probes, and supports device to device transfers over USB rather than over the serial link port.

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[–] [email protected] 78 points 7 months ago (2 children)

So what you're saying is that we've been dealing with shitty naming schemes in tech for decades?

[–] [email protected] 30 points 7 months ago (2 children)

[Sony has entered the chat]

[–] [email protected] 28 points 7 months ago (2 children)
[–] [email protected] 3 points 7 months ago

I use these when I game on my Nintendo DS 3DS XL and have an adaptor to use a USB Type C 3.2 Gen 2x2 cable for easier connectivity.

[–] [email protected] 2 points 7 months ago

Lol I'm pretty sure I have those headphones

[–] [email protected] 17 points 7 months ago (1 children)

They got it right with PlayStation. Sony's other product lines should take notes

[–] [email protected] 15 points 7 months ago (1 children)

Ever try shopping for Sony earbuds? I feel like the model names are a riddle that the consumer needs to solve before they can buy.

[–] [email protected] 13 points 7 months ago

The phones are mental too.

The Xperia range have a model number to denote the different models (similar to Samsung’s S and A) and a version number so if you say the phone’s full name it’s the Xperia 10 5 but the version number is in Roman numerals so it’s written Xperia 10 V, Xperia 5 IV, Xperia 1 V etc.

[–] [email protected] 12 points 7 months ago (3 children)

Destroy TI's walled garden!

[–] [email protected] 3 points 7 months ago

If only you knew what they've been doing to the embedded devices lately...

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[–] [email protected] 19 points 7 months ago (1 children)

There is a website of a person who catalogs Texas Instruments calculators. You can wonder over to the graphing calculator section to see how many different graphing calculators they made along with a bit of information on each one.

http://datamath.org/

[–] [email protected] 6 points 7 months ago (1 children)

I love websites like this.

[–] [email protected] 8 points 7 months ago (1 children)

That's web 1.0. Many of us had sites like this on Geocities and Tripod back in the day.

I absolutely love them too because they're so content dense where as today this would be a 15 item list where you had to click a new page to see each one while reading several paragraphs of what sounds like the most generic, 6th-grade book report on each one "The TI-84 is a calculator. Many people use calculators to do math..."

[–] [email protected] 3 points 7 months ago

I love that you can tell they're a product of passion. Someone was just really into something and wanted to share the info with the world. There's something beautiful about that.

[–] [email protected] 18 points 7 months ago (2 children)

On my TI-83 plus, a fellow students and my calculator were matching rand(int) and it was amazing. Random wasn't really random. I thought it'd be based on some sort of hidden internal clock.

[–] [email protected] 29 points 7 months ago (1 children)

True randomness is really really hard to do in software; bigger CPUs often have hardware random number generators that exploit some sort of quantum or otherwise non-determanistic phenomena, but in software the best you can do is pseudo-random. These are algorithms that generate a sequence of randomly distributed numbers, but in a deterministic way - from a given starting state, it will always generate the same sequence of numbers. Good algorithms are designed to make it hard to infer the starting state just by observing the sequence (if you can do that, you can run the algorithm in parallel and predict the next number), but that's an active area of research.

At a guess, the calculator was programmed to initialise the random number generator from something that it is hard for the user to control (milliseconds since power on would be a good one) the first time you used it, but maybe TI got lazy and just initialised it to a constant value

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[–] [email protected] 9 points 7 months ago

You need to set the seed number.

[–] [email protected] 16 points 7 months ago

thank you for reminding my to take out the dead batteries from my Ti-86 before they leak!

still have it next to my desk... since 1997 or so.

[–] [email protected] 11 points 7 months ago (5 children)

Do kids still use these? Aka, are their parents forced to pay $100 bucks for this piece of 40 year old technology?

[–] [email protected] 5 points 7 months ago

They're passed down as heirlooms now, like slide rules before them.

[–] [email protected] 3 points 7 months ago* (last edited 7 months ago)

fun fact: there are graphing calculator emulators, even modern tinspire cx and cx2 models can be emulated (firebird emu) (as well as ti 83/84 etc, although obviously a different emulator is used for those models)

[–] [email protected] 2 points 7 months ago

They aren't allowed anymore where I live. Only basic calculators now

[–] [email protected] 2 points 7 months ago (1 children)

Here I think using GeoGebra is the norm now for graphing needs.

[–] [email protected] 2 points 7 months ago

Desmos is it where I am.

[–] [email protected] 2 points 7 months ago

Schools own them a lot of the time

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

Iircc the next level up was the TI 92 which could solve linear equations for you by default which was why they don't let you use it on standard tests. Also cuz the Ti8x line can be quickly reset.

[–] [email protected] 13 points 7 months ago

The TI-92 wasn’t allowed on standardized tests due to the qwerty keyboard layout making it be classified as a computer device in the US. The TI-89 has the same CAS functionality as a TI-92 Plus, but in a standardized test approved physical form factor.

[–] [email protected] 7 points 7 months ago (4 children)
[–] [email protected] 24 points 7 months ago (1 children)
[–] [email protected] 2 points 7 months ago

Here is an alternative Piped link(s):

Yes

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source; check me out at GitHub.

[–] [email protected] 5 points 7 months ago (2 children)

Some kid in middle school put mario on my TI-83. The buttons were not ergonomic at all, but it was cool. I also wrote my first ever script on the thing; it solved the quadratic equation.

[–] [email protected] 6 points 7 months ago (2 children)

We all played a game called Drug Wars. It was text based.

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[–] [email protected] 2 points 7 months ago

I have fruit ninja on my ti-83. You swipe across the buttons to slice. It's surprisingly not as awful as you'd expect

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[–] [email protected] 6 points 7 months ago (7 children)

are there any applications for calculators anymore? I feel like since everything can be done on our phones or computers, what's the point of a dedicated piece of hardware that's generally inferior?

[–] [email protected] 31 points 7 months ago* (last edited 7 months ago)

what's the point of a dedicated piece of hardware that's generally inferior?

Focus/concentration, kinda like how George R R Martin writes on an old DOS computer to eliminate distractions while writing (bad example for expediting work, I know). Still requires you to do a lot of the heavy lifting, which instills knowledge for the future.

There's also an element of trust; schools generally trust Texas Instruments that their products do math correctly (you'd be surprised how many calculators don't), the same cannot be said for MegaPower Graphing Calculator Pro (Ad-Free Premium) off of the Play Store.

[–] [email protected] 16 points 7 months ago* (last edited 7 months ago) (1 children)

What do you mean generally inferior?

It has physical buttons, no distractions, and the batteries last forever compared to a phone.

[–] [email protected] 3 points 7 months ago

Except when you put it in "exam mode" and the LED stays lit until the battery dies.

[–] [email protected] 10 points 7 months ago

I use a calculator at work, i could use the one in my phone. I like using my calculator though.

[–] [email protected] 9 points 7 months ago

Inferior hardware doesn't mean inferior performance. Phones do much more than calculators, and calculators just calculate.

Pacemaker hardware is a million times less powerful than mobile phone hardware. But I trust it more to keep the heart going.

[–] [email protected] 9 points 7 months ago* (last edited 7 months ago)

taking tests

[–] [email protected] 5 points 7 months ago (1 children)

I have an HP prime I use at home and work. I also have the app that is identical on my phone, but I am much faster with the physical buttons on the actual calculator. Before I had my HP prime I had a TI 84+ silver and a TI 84+ emulator on my phone with similar experiences.

[–] [email protected] 1 points 7 months ago (1 children)
[–] [email protected] 2 points 7 months ago

A traveling calculator salesman.

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[–] [email protected] 5 points 7 months ago

I had one of these ti-84s.

I also had their “stat” one, it was like a ti-34 or something. It was way easier to use for probability stuff, and parenthesis and plugging in variables to simple polynomials.

[–] [email protected] 4 points 7 months ago

Where's my TI-86 plus?

[–] [email protected] 4 points 7 months ago

Got an OG TI-83 when it first came out as an upgrade to my TI-82 circa 1997. Still use my 83 regularly.

[–] [email protected] 3 points 7 months ago (6 children)

American kids and their damn fancy calculators. I got through a technician degree in Electronics and a Grad degree in Robotics with a Casio FX82. It can display two lines with simple letters and numbers, no graphs. It also stores up to 6 numbers in memory.

[–] [email protected] 3 points 7 months ago* (last edited 7 months ago) (1 children)

Yeah and I bet that sucked

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