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Ti-84 Evo

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Re: Ti-84 Evo

#371

Post by natas »

golem14 wrote: post #130
balls187 wrote: post #79

The comments on this are fascinating . Although, I was waiting for someone to chime in with "HP is better cuz RPN." 2 dinners out for a family of four would cover the cost of this calculator. If my kid's school required this for math, I wouldn't bat an eye at purchasing one. I needed a Ti-83 for school in 1996-1998. If you couldn't afford one, the school would loan you one for the semester. Band instruments were the…

> I was waiting for someone to chime in with "HP is better cuz RPN." Well, it is ;) The Swiss Micros clones are pretty awesome: https://www.swissmicros.com/product/dm41x

I'd take a dm42n over any Ti anyday.

Re: Ti-84 Evo

#372

Post by kstrauser »

mttch wrote: post #364
tombert wrote: post #146

Earlier quoted context omitted.

I sort of agree. You're paying $100 for completely antiquated hardware where its core feature is "it doesn't do much". Pretty much any professional environment that you will need calculations will have access to a computer that can do these calculations significantly faster and better. I thought my HP was pretty cool in high school, but pretty much the moment I graduated I stopped using it because I figured out how t…

There are many professional examples outside of teaching (construction, lab based science, field work, engineering, healthcare, retail) where a calculator, not necessary a programmable one, is useful because the environment restricts the use of computers due to safety, security or practicalities.

My buddy was a general contractor. They have books of pre-printed calculators for common beam lengths. For instance, say you have a room 30 feet wide and you're putting a roof on it with a 30 degree pitch. The book will tell you exactly how long to cut the roof timbers so that they reach from the edge of the wall to the crest of the roof.

Said friend was at a site and someone had misplaced the book. He pulled out a calculator and did some basic trig to give them the lengths and told them to get back to work. He said they were looking at him like he'd just conjured a demon or something. "You can... just calculate that?" "How did you think they made the book?" "But how'd you learn to do that?" "In that math class you dropped in high school."

Re: Ti-84 Evo

#373

Post by krupan »

LeoPanthera wrote: post #11

What calculators are you guys using that aren't in academia anymore and don't need the "exam approved" limitations? Or are we all just using software on our computers now. That would be sad. (I've had a Casio fx-991EX on my desk for a few years, that replaced a broken Casio fx-991ES. Though designed for academia, its operation is burned into my brain at this point.)

emacs calc. It's RPN by default, inspired by HP RPN calculators. Also allows algebraic input.

Or often just a python repl

Re: Ti-84 Evo

#374

Post by varun_ch »

nxobject wrote: post #175
varun_ch wrote: post #69

Earlier quoted context omitted.

International Baccalaureate math has some stats questions that require a calculator that can do stats questions. Not really possible by hand in exam conditions!

HL or SL? (It's been a while for me, but I know I needed PDF/CDF functions... and I don't know about the optional modules/Further.)

I took Math AA HL in M25

Re: Ti-84 Evo

#375

Post by varun_ch »

kristopolous wrote: post #107
varun_ch wrote: post #100

Earlier quoted context omitted.

Oh that’s neat! Probably should’ve checked your link. Not sure what the advantage of the Ti-84 would be for highschool math, but the UX on NumWorks calculators is completely a game changer, especially with stats and graphing questions. Maybe everything is possible on the Casio, but it’s so much clearer on the NumWorks (especially for eg. Physics questions, where you might want to retrieve values you calculated earlie…

I mean sure. Unlimited precision calculation I don't think is the proper domain of the cheap desk calculator. I mean what do these do? I think like 10 digits worth? If you're actually doing something requiring over 10 digits of accuracy and you can reliably hit that you probably have a $10 million lab... So honestly what are we talking about here...If it's pure mathematics this is a bad tool for that as well.

oh of course. But I meant being able to select a result or equation from 10 minutes ago in the calculator history without re-typing it!

Re: Ti-84 Evo

#376

Post by Ekaros »

jkubicek wrote: post #200
linsomniac wrote: post #166

Earlier quoted context omitted.

My mom once was getting ready for work and I hear a pop and hear my mom yelling. I go in and her necklace fell off the dresser; a "dust buster" wall wart was plugged in back there and it fell across the prongs, shorting it out.

This is why you always mount outlets with the grounding pin facing up!

Or have sensible outlet design where prongs are always recessed.

Re: Ti-84 Evo

#377

Post by charcircuit »

prab97 wrote: post #291
charcircuit wrote: post #188

Earlier quoted context omitted.

You could get that same educational value from programming things on a smartphone.

Current smartphones are highly optimized for content consumption a.k.a doom scrolling. Nothing serious exists for programming. On top of that, a touch keyboard and hard to reach special characters make programming on a modern smartphone a big chore. I miss the old days of smartphones that had a hardware keyboard with tactile feedback. I used to code up and maintain a PHP based dynamic website circa 2007 with a Sony E…

It's much harder to type on a TI calculator than a smartphone.

Re: Ti-84 Evo

#378

Post by fudged71 »

jedberg wrote: post #339

Summary of the comments in here: * I used the programming functionality of the calculator to get around the rules * I didn't care much for the math, but my TI calculator was my first programming experience and it's what got me to love programming My experience is similar. We were allowed to use our TI-85s in class, but we had to go up to the teacher before the test and show him that we were running a factory reset, t…

I wonder how many of us had the exact same experience (down to those damn three little dots!)

Re: Ti-84 Evo

#379

Post by Dwedit »

jacobolus wrote: post #304
kstrauser wrote: post #292

Earlier quoted context omitted.

Anyone here have an idea why the models jumped around like that? Like why'd the 82 come out after the 85, or the 83 after the 92?

They had different models with different capabilities. As they made minor style changes, they bumped the numbers slightly. The 81–82–83–84 were basically the same concept, as were the 85–86. The 89 and 92 were higher-end models. The 80 and 73 are simpler models intended for middle school. All of them are basically a multi-generational scam perpetrated against the hapless parents of American high school students who w…

I think you can flash a TI83 Plus ROM to a TI73 by using an exploit? One exploit was that flashing an OS writes all the ROM, then checks the signature afterwards, then erases it if it fails. Pull batteries at the correct time and...

Re: Ti-84 Evo

#380

Post by Surac »

To bad it is still made for pupils and not engineers. I tried using it for computer science and math and it lost to a Casio
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