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Texas Instruments TI-85 Advanced Graphing Scientific Calculator

Based on 176 reviews
Condition: Used - Good
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$86.97
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Availability: Only 1 left in stock, order soon!
Fulfilled by The Calculator Cabana

Arrives Wednesday, Nov 11
Order within 16 hours and 38 minutes

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At a glance

Condition
Used - Good
Model
TI-85
Weight
12.8 oz
Color
Black, black
Calculator Type
Graphing,Engineering/Scientific
Power Source
Battery Powered
Number of Batteries
1 Lithium Metal batteries required.
Works with
Single Use

Features 5

  • Up to 99 graphing functions defined, saved, graphed, and simultaneously analyzed
  • Easy-to-read 8-line by 21-character display
  • Link capabilities for data transfer through I/O port
  • Powered by 4 standard AAA batteries with a lithium battery backup

Description

Product description The Texas Instruments TI-85 has been designed as a graphing calculator for engineering and calculus students; yet it is versatile enough for other math applications. Designed with students of higher math in mind, the TI-85 is a scientific calculator that offers a wealth of features and functions that will take you smoothly from pre-algebra all the way through college calculus. Its data I/O port and unit-to-unit link (compatible with all TI-85 and TI-86 models) allow you to easily transfer your final graphs and equations among systems, while the 28K RAM and customizable menu keys provide quick access to necessary programming functions. As you advance through classes, simply reprogram the keys to keep up with your new textbook chapters. Functions are widely varied, and include the ability to solve for systems-of-equations, polynomial-root, or any variable in an equation. Graphing possibilities include parametric equations, polar equations, and solutions to differential equations. Statistical analysis runs the gamut from linear, logarithmic, exponential and power to quadratic polynomial, cubic polynomial, and quartic polynomial regressions. In addition, data is viewable as strings, pictures, or vectors. Simultaneous separate graph capability and 15 interactive zoom features are also included. The display is a generous eight lines long and 21 characters wide; this unit is powered by four AAA batteries, with a dependable long-life lithium ion providing memory backup. Texas Instruments includes a one-year warranty covering parts and service. What's in the Box TI-85, lithium backup battery, link cable, guidebook with warranty card, and impact-resistant slide case; AAA batteries not included

Specs 15

Brand Texas Instruments
Color Black, black
Calculator Type Graphing,Engineering/Scientific
Power Source Battery Powered
Number of Batteries 1 Lithium Metal batteries required.
Model Name ti-85
UPC 033587434654
Unit Count 1 Count

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Thought I had reviewed this item.
I was happy to find this calculator for a cheaper price, because I have had it stolen from me twice. The second time I replaced it brand new, and these little buggers are expensive. I was happy to see that the product worked, all of its functions work and the battery works just fine. It is an older model than the calculators I had and the buttons look more original. It does not look too old. I would not have known if I had not already purchased two of them. I no longer take my calculator to public places with me where it can be stolen. I leave it at home unless I absolutely have to use it. What is wrong with those people? Do unto others as you would have them do unto you. No, you may not use my calculator. ... show more
Reviewed in the United States on June 28, 2011 by 4NeedShopper

Died within a few months
The TI-85 was an awesome calculator. I used the one I had in college through graduate school (physics) and for a decade afterwards. Overall it lasted almost 20 years until the display began to give way! That said, the calculator I purchased from this vendor lasted less than 9 months before refusing to turn on. So sad. Don't buy this item. It has reached the end of it's lifespan. ... show more
Reviewed in the United States on October 5, 2023 by Live simply

Works and satisfied
I was confused about a setting but figured it out. Calculator works well!
Reviewed in the United States on June 21, 2025 by Amazon Customer

25 years of using this model
I purchased a second calculator for the office, my original one had been with me over 25 years. The new one has smaller decals for the numbers, but otherwise excellent.
Reviewed in the United States on May 13, 2023 by Caleb Otis

Exactly what I needed
I enrolled in a college Chemistry class without a calculator (I usually just use my smart phone as a calculator). I was shocked to find that a nice scientific calculator was up in the $100 range, new. This calculator works perfectly for my class and will be great for the more advanced math classes as well, at half the price! ... show more
Reviewed in the United States on October 10, 2012 by Just4Today

Still a great calculator after all these years.
I had this calculator in high school and loved it then. I've gotten used to the buttons, so I wanted another one. Glad to find it here in the jungle of Amazon. Works just as advertised!
Reviewed in the United States on February 16, 2018 by Jeffrey L.

Needed more pictures
Item was used which I knew. Display has some dead pixels, plastic over the display is peeling.
Reviewed in the United States on February 13, 2026 by Joe Average

Not a good ideal to buy used.
This item is rather old and wore out a lot of the function are not very usable. But I was aware that the item was used, so I got the I paid for.
Reviewed in the United States on October 30, 2015 by Ms. Nicole Johnson
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