Texas Instruments

Why r/BuyItForLife recommends Texas Instruments

17 mentions from real owners

• #1Dec 4, 2025

  Something you didn’t expect to be BIFL but outlasted your expectations?

  Ti-83 calculator from 1998. Still use it almost everyday. Works perfectly.

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• #2Oct 3, 2025

  I’ve had this calculator for 35 years. My daughter is using it at school now. Still works!

  Just dug out my TI-30 SLR+ from 1987 (http://www.datamath.org/Sci/Modern/TI-30SLR_PLUS_1987.htm) Still works great. Still have some formulas from statistics written in pencil on the side of the hard case...

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• #3Oct 3, 2025

  I’ve had this calculator for 35 years. My daughter is using it at school now. Still works!

  I’m still using my TI89 from high school and I graduated close to 20 years ago!

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• #4Oct 2, 2025

  I’ve had this calculator for 35 years. My daughter is using it at school now. Still works!

  My 2500 works as new. I also have a good working TI-150 handheld with a good working 0.2 inch plasma display that I designed. It was the only handheld they every sold with a Panaplex display.

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• #5Oct 2, 2025

  I’ve had this calculator for 35 years. My daughter is using it at school now. Still works!

  I have a working TI-2500 Datamath with the little red LED display from 1973. I worked at TI as an Engineer in the calculator department.

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• #6Aug 12, 2025

  What's the oldest thing you still use daily that works like new?

  TI-83 Plus from 1999.

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• #7Aug 12, 2025

  What's the oldest thing you still use daily that works like new?

  TI-85 here ftw

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• #8Aug 3, 2025

  TI36X pro still works perfectly.

  I have an HP 11C at work! ~42 years I also have a TI-85 somewhere that still works fine. ~32 years

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• #9Aug 3, 2025

  TI36X pro still works perfectly.

  My dad is also an engineer, and he still has his from college as well! Texas Instruments calculators are truly BIFL

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• #10Aug 3, 2025

  TI36X pro still works perfectly.

  Hey there fellow engineer, yes yes it will absolutely last you longer than that.

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• #11Aug 3, 2025

  TI36X pro still works perfectly.

  Neat. I still have my 9 year old Nspire CX CAS since highschool. It isn't exam legal at KTH so I supplemented with a TI-30XB for exam use. Hoping they last a long time.

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• #12Aug 3, 2025

  TI36X pro still works perfectly.

  Got mine 13 years ago, and it was way too powerful lol. It has all the capabilities of a ti83, minus the graphing display, including a multi-variable auto solver, common science constants, and memory storage (variables and equations). I definitely was able to solve a few problems during tests that I otherwise wouldn't have been able to with a "normal" non-graphing calculator, but none of the proctors were suspicious because it looked like a regular non-graphing calculator.

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• #13May 10, 2025

  Buy it for life digital products?

  Texas Instruments calculator

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• #14Mar 11, 2025

  What is the longest lasting item you've bought?

  Texas Instruments TI-30 calculator, solar powered and I’ve had it for 30 years. I have a Dave Justice rookie card that is from 1991

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• #15Mar 7, 2025

  All the best products/brands to buy for life?

  Victorinox knives. Mocamaster coffee machine. Saddleback leather. All clad pots and pans. Tweezerman tweezers. Seki nail clippers. Parker Jotter pens. Texas Instruments calculator. Maui Jim sunglasses. Estwing hammer. Allen Edmond dress shoes. Honorable mentions that are top quality but not for life: Melin hats (closest to bifl caps). Vornado fans (5-10yr warranty). Thursday boots (great price to quality ratio).

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• #16Feb 1, 2025

  What’s your favorite “Buy It For Life” purchase you’ve made - new and used?

  I bought at TI-82 graphing calculator in high school @1990 I still use it 10, wait, how has it been 35 years.. later.

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• #17Jan 4, 2025

  What's the oldest item you still use daily that has withstood the test of time, and what's its story?

  Mine’s only 20 years old, not 40, but I still use my TI-83 almost daily. Replaced the cover a few years ago when the original wore out. Lives loose in my backpack. Love that thing.

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