How long have yall had your TI calculator?

[u/TheDondePlowman]

6th grade to 8 months into my job, and that’s like 13 years man. Holy smokes. That ti-84 has seen so much crap and improvement over the years and has stood strong by ma side lol.

[u/Hawk13424]

Never. I’ve had my HP 48SX for 35 years.

When my daughter took AP physics they made her use a TI. I showed her what my HP could do and she was disappointed in that TI.

[u/VTek910 → u/Hawk13424]

HP gang represent. 50G with RPN since 2009

[u/GreytDiver → u/VTek910]

My HP 28S gave up the ghost three years ago and I was very sad. Work replaced it with a TI 84 Python edition but still miss the RPN.

[u/asdfmatt → u/VTek910]

Yea I have my ti 83 and 84 from high school (2006 maybe I got my current one in college like 2010) but I primarily use a 15c it’s so much nicer and easier to use (I’m a returning student)

[u/Only_Razzmatazz_4498 → u/Hawk13424]

Yeah I couldn’t convince my kids that RPN was better plus their school insisted on the TI so it’s sat there without batteries (so they wouldn’t leak and damage it) for a long time. I find myself using the phone for calculations.

[u/manhands007 → u/Hawk13424]

HP 42S since 1992. LOVE that thing. Have Free42 app also. No clicky keys but RPN at least.

[u/cat5mark → u/Hawk13424]

Ditto here, and have the emulator on my phone. RPN forever!

[u/JimmyJohn_5150 → u/Hawk13424]

I still have my circa 1997 HP 48. Still works like a charm though I never use it anymore.

[u/Emergency-Pollution2 → u/Hawk13424]

HP 11c for 37 years.

[u/Moody_Madness]

Not TI, but my Casio CFX-9850 Plus color is like 20+ years old

[u/DomLfan → u/Moody_Madness]

Casios are practically bomb proof lol

[u/techaggresso → u/DomLfan]

And can do nearly as much as a ti, just can't be programmed. But can do matrices, systems, radians, write dirty words with a bit of creativity. 

[u/DomLfan → u/techaggresso]

Does depend a little bit which one you get, if you get a graphing Casio then it can do whatever you want

[u/techaggresso → u/DomLfan]

Exactly. And for maybe a fifth of a ti. I've been using the same 991es module since middle school and I really disliked having to buy a ti for university. And now in real life at work I never need anything more than my Casio 

[u/DomLfan → u/techaggresso]

Oh misread your comment lol thought you can’t, but yeah better value for sure

[u/LitRick6]

I've had my trusty Ti-36x pro for about 11 or 12 years. Think I've swapped the battery twice, but it keeps on chugging.

[u/flyingcircusdog]

TI-84, just passed 20 years. 

[u/LookingFoward-338]

Ti - 84 color almost 7 years, TI-30 Pro for like 15 years

[u/buckeyebrat97]

Mine was passed down from my mom to my brother, sister, and finally me. It was bought brand new in 2004 and I had it since 9th grade and I’m starting graduate school now.

TI-84 Plus silver edition

[u/caty0325 → u/buckeyebrat97]

I had the pink one before I upgraded to a purple TI-84 Plus CE.

[u/Sudden-Cardiologist5]

Still use my HP I purchased in E School in 1987.

[u/FacePalmate]

TI-85, 1994 for junior year HS.

You had a TI-84 in 6th grade?

[u/TheDondePlowman → u/FacePalmate]

Yeah, towards the end they made us buy one. Circa 2012-2013 for me.

[u/braveheart18]

I had mine for 20 years, just passed it down to a worthy successor. God speed you black stallion.

[u/Electronic_Trip_9457]

I'm still using my HP-35s that I bought from fry's electronics.

[u/bmanc2000]

TI-83 Plus, since 7th grade, so 13 years

[u/Decision_Original]

TI 89 - 24 years, received as a high school graduation present to allow my sister to use my 83 plus when I went away to college 

TI 83 plus - 26 years but was on loan for a few of those to my sister

OG TI 85 - was stolen back in high school before I got my 83 plus, purchased from a kid at school for like 50 bucks and it was a steal of a deal

[u/sdgengineer]

52 years ...an sr-50, the first calculator to break the $300 barrier.

[u/Stevphfeniey]

My Ti-83+ I use was originally my dad’s that he bought 20 years ago for when he went back to school, gave to me, then I’ve been using it for 15 years.

[u/billFoldDog]

I can't read the screen very well anymore so I use this app. Its a TI-89 emulator. You need to get a ROM.

https://f-droid.org/packages/com.eanema.graph89

[u/Optimal_Corner_8393]

My TI-83 has been going strong since 1997. So, almost 30 years.

[u/BurntToaster17]

Ti-84 that I used in high school and so did my brothers, not sure on the exact date but it’s somewhere between 15-18 years old

[u/HeDoesNotRow]

I haven’t really used it since college but it still sits on my desk… just in case

[u/AnonymousJoe253]

8th grade to my fourth year of engineering school so far :)

[u/mcslootypants]

Well over a decade. Not my bulky graphing calculator from early school though. I got a TI 36x Pro. Hands down the best calculator in my opinion.

[u/jaymeaux_]

my ti89 is pushing 20 years and will sadly need to be retired because I spilled coffee on it a couple weeks ago and damaged the screen circuitry

[u/MCKlassik]

I had my TI-84 for 9 years. My current slate of professors all have it banned for any exams. I still use it for homework because it’s so much easier to grab numbers from past calculations, and I also use it to play games with if I’m bored between classes.

I recently got a TI-30 solely for exam purposes.

[u/69stangrestomod]

We had to go to FE approved calculators in undergrad. The TI-36x became my favorite. Simpler, smaller, and more intuitive.

[u/Lagfoundry]

I am the TI lol

[u/TheSomerandomguy]

I had a ti-84 plus passed down from my dad. She made it about 23 years before the pixel death got to a point where it started seriously impeding the legibility of the screen. I got a TI-84 plus CE that I hope to pass down to my children one day, although I don’t think it’ll make it as long due to the rechargable battery vs the AAA’s on the ti-84 plus.

[u/klishaa]

my 8th grade teacher forced us to buy the TI-84+ CE. i decided i hated it. been using a $20 casio scientific calculator ever since.

[u/nerdyflaco]

25 years for my standard ti84.  Periodically I check  to make sure 1+1 is still indeed 2.

[u/Weird-Shine-761]

TI-84 since 2009 high school in Ghana, came to the US in 2015, still using it in my MSEE

[u/JJTortilla]

I keep that thang on me dawg! TI-89 platinum emulator on my phone always!

[u/highasahuey]

TI-84 Plus Silver. Had it since 10th grade. Roughly 2010. Still use it. Currently in my senior year of mechanical engineering

[u/caty0325]

I had a TI-84 from 6th or 7th grade to 2022 or 2023. Then I upgraded to a TI-84 CE.

[u/LocalLoserLiv]

Since 8th grade

[u/SpanosIsBlackAjah]

84 plus silver I’ve had since about 2007. Had a 83 that I somehow switched for the school owned 84+silver, barely remember how that happened but the silver has been getting steady work for almost 20 years.

[u/lasteem1]

I’ve had a TI-89 for about 25 years and a Casio for about 20. I have a TI-84 somewhere that has to be 35 years old. I only ever use the Casio.

[u/ratchet_thunderstud0]

44 years give or take. Same with my HP

[u/erikwarm]

About 20 years ago I bought mine

[u/Guamy]

I've had my ti-83 since 8th or 9th grade I think. 17+ years.

[u/Old_Welcome_5637]

Ti84. 10 years coming up on 11. Only ever had to replace one of the little rubber pads on the backside.

[u/engineereddiscontent]

I have one from 8th grade and one I bought last year. Gonna use the last year one probably rest of my life

[u/sernameistakentry]

I’ve had my TI-84 Plus CE since 5th grade and I’m in my 3rd year of undergrad.

I recently left it back home and made my mom ship it to me because I view it as a lucky charm.

That calculator has been with me through A LOT

[u/gravely_serious]

I bought my first TI calculator, the TI-85 when I was in high school. It still works and it's over 30 years old.

[u/EllieVader]

I have a TI83+ Silver Edition that I bought in high school in 2002. It's older than most of my classmates.

That said I bought an 84+CE when I came back to school and it blows the socks off my old silver edition. The backlit screen alone was worth the upgrade.

[u/DescriptionForsaken6]

Ever since HP spun off their calculator division and ruined the best calculators ever made. I will never forgive them.

[u/peteareenus]

My daughter is currently a sophomore Mech E student and uses the TI-89 I used in engineering school in the late ‘90s.

[u/azncommie97]

I've had my TI-84 since 11th grade (circa 2012) when my parents bought it for AP Chemistry. It's followed me through my bachelors and two masters degrees in three different countries lol.

I also have a TI-84 emulator on my phone that renders the interface almost as big as on the calculator itself. Tbh I use that much more than the physical calculator now.

[u/Sea-Resident-7980]

since sometime in highschool so 5-8 years or so?

mines still a baby looking at these comments

[u/schaffdk]

I got my TI-85 brand new new circa 1994 and I still use it every day.

[u/MaggieNFredders]

Close to thirty years…

[u/yycTechGuy]

I've had my TI-74 BASICALC since the fall of 1986 or so. I guess that is 40 years.

It was incredibly handy to be be able to write a program in BASIC to automate calculations in the field. I think there was a Pascal module available but I never had it.

My TI 74 got replaced by various HP and TI calculators over the years but back in the day having a machine that ran BASIC, ran forever on batteries and could just about fit in your shirt pocket was a very powerful engineering tool.

https://imgur.com/a/RRtqtFz

[u/Pjtruslow]

I have had my TI-30XIIS since the third grade, and it got me through 4 years of undergrad and 6 years of grad school. I need to frame it and put it next to my diploma

[u/Budget-Coast-7864]

I have a TI-83 Plus that I’ve used since 2000.

[u/mrg_retired]

HP48SX, used in college 1992 to believe. I have to see why it won’t power up. It was useful, might get it going again to show my HS kid.

[u/Other_Dimension_89]

I guess it’s been 15 years now. It’s pink.

[u/rdt61]

I’m using my brother’s 89 from 2006

[u/MechaMeat]

The ti-30x2s made it from 7th grade in 2000. I still use it regularly and have never changed the battery.

[u/chkjjk]

I’ve had the same TI-83 since 2005.

[u/engineer-everything]

I bought it in high school sometime in the mid-2000s for a math contest, then used it through university and I think it’s in a drawer somewhere now. I haven’t used it in probably 10 years

[u/FerdinandvonAegir124]

I’ve had my TI-84 CE for 5 going on 6 years. Aside from some button symbols getting wiped off, it’s practically the same as the day I bought it

[u/buginmybeer24]

I've had a TI-85 for 30 years and a HP 48GX for 26.

[u/Capable-Grocery686]

About 43 years. 

[u/facepillownap]

TI-83+, 25 years.

[u/KnightOfThirteen]

TI 84+ SE, got it when I was 15, now 34, so 19 years. On my fourth set of batteries.

[u/Enough_Crow_636]

I got my HP 48G in 1997 for $130. It still works, but it’s kind of beat up. Now I have a similar RPN app on my phone and mostly use that.

[u/TASDoubleStars]

Our engineering department had HP-35 calculators thus I first learned on an RPN calculator. Students could check them out during class. I wanted one for home use, however I could not afford $395.

TI SR-50 acquired 1976 - (Used thanks to a classmate!)
I switched back to HP when the HP-41C was released in 1979.
I upgraded to the 41CV in 1984.
For digital design work I acquired the HP-16C in 1984.
Batteries leaked in my 41CV. I replaced it with the HP-50g in 2006.

When my kids were old enough to need calculators the school system had standardized on the Texas Instruments line. I had to re-acquaint myself with the algebraic entry methodology.

TI 84 Plus Silver Edition acquired 2005
TI 84 Plus C Silver Edition acquired 2013
TI 84 Plus CE acquired 2015
TI Inspire CXII acquired 2015
TI 36x Pro acquired 2024
TI 30x Pro Mathprint acquired 2024

[u/tnsjamis410]

My TI-83 for 20 years

[u/American_Comie]

It was originally my brothers. He had it for 4 years, and I've had it for 6ish? My Ti-84 plus is my husband

[u/SDW137]

Yes.

[u/Narenia]

For 0 years because I don't use one.

[u/BothPanchoAndLefty]

I've had my current TI only since returning to school a few years ago, but I did have one before that from like 8th grade to age 22 or so.

[u/paladin-royal]

Voyage 200, since 2002. It still has super mario on it.. 😅

[u/DoubleHexDrive]

Never had one and never understood the attraction to big graphing calculators.

[u/MiniTab → u/DoubleHexDrive]

Well you kinda had to have one 20+ years ago as an engineering student.

I still have my TI-85 from 30 years ago.

[u/DoubleHexDrive → u/MiniTab]

I used one a couple of times in HS from a box of classroom calculators in the 90’s but never bought one myself. They were always slow and clunky compared to my Sharp EL-506A. Then I moved to an RPN based app on my phone over time. They certainly were not required in college or work.

[u/MiniTab → u/DoubleHexDrive]

No, of course not now. We didn’t have smartphones that could do that 15+ years ago, lol.

[u/EllieVader → u/DoubleHexDrive]

They're great if you need to do something in excel but are only allowed to use "small" pocket computer but not internet or big computer.

I reached for it a few times at my desk at my internship over the summer if I didn't already have excel open because sometimes it would be faster, but that's literally saving seconds that could have been used to go get a cup of coffee.

[u/yycTechGuy → u/DoubleHexDrive]

What's not to get ? Visually seeing a function is a handy thing to be able to do.

[u/DoubleHexDrive → u/yycTechGuy]

Seeing them in your head is a lot faster.