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GlampingNotCamping OP t1_j3z64hp wrote

I don't know what Texas Instruments is doing, but they're killing it.

This calculator got me all the way through 2 years of high school, 4 years of engineering in college, and so far 2 years of construction management. It's therefore 7-8 years old, has been on numerous jobsites, has all the necessary tools to get through every math class I took - trig, algebra I and II, Pre-Calc, Calc I, Calc II, Calc III, and Differential Equations. Just last month it was in the muddiest excavation I've ever been in, under blaring Pacific heat, and I could dependably use it for weeks without a recharge. By the way - either the battery or power consumption is incredible - my biggest stressor with this calculator is that I practically never have to charge it so I might lose the charger. That's it. The color screen makes multiple graph functions easily navigable, its software is highly versatile, it fits conveniently into pockets (much slimmer than standard TI-84's), and overall has been an amazing implement to have in my education and work.

Ill probably buy another one when this one dies in 10+ years

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Mobile_Net2155 t1_j3zeefn wrote

I was gonna say you should wash yer hands more until you said it was mud from the jobsite lol

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Kevo_NEOhio t1_j3zfwqq wrote

Naw…HP 48 is buy it for life. RPN for life!

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IceCatCharlie t1_j3zmw4x wrote

Agree. I have a TI-83 from 1996 that I still use nearly daily.

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gravis86 t1_j3znsdy wrote

I wish I still had mine! I got a TI-89 when I started high school and was taking more advanced math classes and I don’t know what happened to my TI-83. I miss the built-in screen protector.

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GuyNemeth t1_j3zpkla wrote

TI makes great calculators, but I was recently given a new 84-Plus CE and I am definitely not a fan. I absolutely cannot stand the change from AAA batteries to only having a charging cord, and the slimmer design seems like it makes it more annoying to slide the cover on. I also don't like that they reversed the orientation of the cover, so now you have to slide it on from the top as opposed to bottom. Also, maybe it's because of the slimmer design, but the buttons feel very squishy to me. The buttons on my old 84-Plus feel like there's more weight behind the press, while the buttons on the new one feel like one of those cheaper scientific ones where it might miss a button press every once in awhile if you didn't press it really deliberately and with enough force.

So personally, I'm sticking with my old 84-Plus for now, but that's just me.

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Bake_jouchard t1_j3zro1c wrote

I have one and the ceiling collapsed and flooded onto my desk at work and it still worked after that. They are tanks

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F-21 t1_j3zty0x wrote

I don't mind li-ion batteries. Like, 10440 cells are same size as AAA but last waaay longer (4.2V vs 1.5V - you can store more energy at higher voltage...) and are easily rechargeable and don't leak, stay charged longer etc...

I just hate when it's a non-replaceable format which is common nowadays.

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FlippingPossum t1_j4126zl wrote

I have a TI-81. That thing came in clutch while I was pinching pennies. Grocery shopped while adding up everything then added in the sales tax. Also worked great to keep my scouts within budget while shopping. Still prefer it to adding up things on my phone or computer.

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ras2101 t1_j426yn4 wrote

Makes me feel old that this is a “buy it for life” post on a product that didn’t exist when I bought my standard TI-84 in Algebra 1 which is still kicking it by the way lol. My wonderful TI-89 lives on my desk still used daily and that was bought in 2010(?) now I feel old

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karmanman t1_j42dqay wrote

I have a ti-89 from either 2000 or 2001 and it still works perfectly. Really well-made devices. Also have an 82 from the 90's somewhere I should dig up, that thing was as rugged as the old Nokia phones.

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wiga_nut t1_j43hat2 wrote

Amazing how little these have changed over the years. Including the price. I feel like they should be much faster and cost $50 tops

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Hobbyist991 t1_j4ik8yf wrote

How do you post that without cleaning it up?

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GlampingNotCamping OP t1_j4vtcef wrote

TI is functionally a tech company. There are plenty of companies out there that simply produce calculators with stagnant tech that do 90% of what people need a calculator for. The extra cost covers the last 10% and that's all R&D for batteries, software, and supporting platforms. Production of the device alone is likely much less than half the cost

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SRSchiavone t1_j5336mg wrote

Seconded for the TI-84 Plus CE. I adore mine, it is the be all end all.

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