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Ti-84 Evo

education.ti.com

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Re: Ti-84 Evo

#151

Post by tombert »

BizarroLand wrote: post #144
rangestransform wrote: post #125

Earlier quoted context omitted.

I got an HP50g from Craigslist in high school that - was cheaper than a TI - had a primitive CAS system - teachers had no idea how to put it into test mode It carried me through AP calc BC, I would’ve gotten <4 off of my own knowledge alone

Mine was a Casio fx-something. Teachers didn't like it but it didn't let me cheat and it was just the right amount of functionality to help me with math. Carried me through Pre-Cal, Trig, Calculus and Differential Equations.

That was my first graphing calculator in high school, because it was way cheaper than the equivalent TI. Like seriously 1/4 the price for "beginning of the school year" sales.

That thing was fine, and if I hadn't dropped it and broken it, I probably would have kept using it for the rest of high school. I eventually replaced it with an HP.

Re: Ti-84 Evo

#152

Post by nick49488171 »

tombert wrote: post #146
vvpan wrote: post #38

We had to buy those calculators for highschool and it was a waste of money, felt like somebody must be paying somebody off to have thousands of students buy a device that they will certainly never have to use (and is of little educational value).

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…

The interface is great for what it does though. I still use ti-83 interface with the calculator app on my phone.

Re: Ti-84 Evo

#153

Post by ziofill »

About 25 years ago my parents got me a Ti84 as a surprise for Christmas and they hid it in the attic so I couldn't find it in the meantime. A few months went by and a couple days before Christmas, when it was time to wrap the presents they couldn't find it anymore. My dad went out and got a Casio something as a late minute replacement, and that was the calculator I used in high school and I never knew about this story. Then last year I found a Ti84 in my parents attic...

Re: Ti-84 Evo

#155

Post by [deleted] »

UqWBcuFx6NV4r wrote: post #132
ndiddy wrote: post #86

From here: https://www.cemetech.net/news/2026/4/1062/_/ti-84-evo-calcul... > 3x Processing Power - Matching one of the speculated options, the calculator appears to use an ARM Cortex CPU, finally retiring the z80 and ez80 family of CPUs that were used in three decades of TI-83 and TI-84 Plus graphing calculators. It's running at 156MHz, compared to the 48MHz of the older calculators. It appears likely that in an unex…

One-shotted with Claude Code. Chef kiss.

[deleted]

Re: Ti-84 Evo

#156

Post by libraryofbabel »

ndiddy wrote: post #86

From here: https://www.cemetech.net/news/2026/4/1062/_/ti-84-evo-calcul... > 3x Processing Power - Matching one of the speculated options, the calculator appears to use an ARM Cortex CPU, finally retiring the z80 and ez80 family of CPUs that were used in three decades of TI-83 and TI-84 Plus graphing calculators. It's running at 156MHz, compared to the 48MHz of the older calculators. It appears likely that in an unex…

Much nostalgia. The TI-83 Z80 was how I learned assembly as a teenager, so I could write better calculator games than was possible with TI Basic. Many others here had a similar experience, I’m sure. It’s been a couple decades, but I’m sure I’d still remember most of it if you put me down in front of a bunch of Z80 asm code.

One thing that I remember vividly was you had no MUL or DIV, so you have to implement them yourself with shifts, adds, subtraction, etc. This was an extremely useful learning experience

Re: Ti-84 Evo

#158

Post by fph »

neuroelectron wrote: post #104
ndiddy wrote: post #86

From here: https://www.cemetech.net/news/2026/4/1062/_/ti-84-evo-calcul... > 3x Processing Power - Matching one of the speculated options, the calculator appears to use an ARM Cortex CPU, finally retiring the z80 and ez80 family of CPUs that were used in three decades of TI-83 and TI-84 Plus graphing calculators. It's running at 156MHz, compared to the 48MHz of the older calculators. It appears likely that in an unex…

Real shame since cortex has a admin TrustZone processor that is licensed to special interests only. For the educational market, this "security" is a selling point. It guarantees that a student isn't running unauthorized code or "cheating" apps. It also likely allows OTA auditing of the classroom's state.

What prevents a motivated cheater from swapping out the processor entirely?

Re: Ti-84 Evo

#159

Post by hoistbypetard »

pavel_lishin wrote: post #40
vvpan wrote: post #38

We had to buy those calculators for highschool and it was a waste of money, felt like somebody must be paying somebody off to have thousands of students buy a device that they will certainly never have to use (and is of little educational value).

I certainly got a lot of educational value out of mine. I managed to program a fully functional Minesweeper game on mine, using the built-in programming tools - no transferring efficient binaries via cable! But yes. 99% of what we did with them in class - when we were even allowed to use them - could have been handled by a little solar-powered calculator with basic arithmetic functions.

We made multi-player games over the link cables in the early 1990s. We certainly learned a ton from building those. It's not clear how much the calculators added to the math and chemistry classes where we were supposed to use them.

Re: Ti-84 Evo

#160

Post by TheMagicHorsey »

ziofill wrote: post #153

About 25 years ago my parents got me a Ti84 as a surprise for Christmas and they hid it in the attic so I couldn't find it in the meantime. A few months went by and a couple days before Christmas, when it was time to wrap the presents they couldn't find it anymore. My dad went out and got a Casio something as a late minute replacement, and that was the calculator I used in high school and I never knew about this stor…

Hahaha! This is great.

Somewhat related. My mom once yelled at me for losing a necklace she really liked. Then we were moving her stuff out of her house and found the necklace behind a wardrobe, wedged between it and the wall. It had been there for like 40 years, layered in dust.

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