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Texas Instruments

Texas Instruments TI-85 Advanced Graphing Scientific Calculator

    • Based on 172 reviews
Condition: Used - Good
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Availability: Only 1 left in stock, order soon!
Fulfilled by RBS Logistics
Arrives May 15 – May 16
Order within 20 hours and 41 minutes
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Features

  • 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
  • Guidebook, unit-to-unit link cable, case, 1-year warranty

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

Brand: Texas Instruments


Color: black, Black


Calculator Type: Engineering/Scientific, Graphing


Power Source: Battery Powered


Number of Batteries: 1 Lithium Metal batteries required.


Product Dimensions: 9.45 x 4.33 x 4.33 inches


Item Weight: 12.8 ounces


Item model number: TI-85


Batteries: 1 Lithium Metal batteries required.


Is Discontinued By Manufacturer: No


Date First Available: September 4, 1973


Manufacturer: Texas Instruments


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 15 – May 16

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
    • 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
    • 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
    • Works great
Doesn't look like the one pictured. Seems like an older model but that's fine. It works and that's all I need!
Reviewed in the United States on March 12, 2017 by Tara
    • Used Very good. It wasn't.
The calculator was marked Used-Very good. What I got was from someone's junk drawer. Its cover was missing and some kid's name was scratched on the back.
Reviewed in the United States on August 16, 2022 by Joseph M.
    • Super Quick!
This item arrived THE NEXT DAY! Awesome service:0) Calculator is in great shape too,clean and well packaged. Instruction booklet is also included and in great shape. And did I mention that it came so very very fast!
Reviewed in the United States on November 17, 2011 by Joanne LeVally
    • Product did not work properly.
The product does turn on but when you enter anything, the screen dims down very badly. Bought it for my Granddaughter and she lives elsewhere so it is very inconvenient to return it. I had her go and buy some very good batteries to make sure they were strong enough to drive it but still didn't help. Dissapointed but I don't think it was sold that way on purpose. I bought her a new one very similar from Wal Mart so she is back in business. ... show more
Reviewed in the United States on September 3, 2023 by Billy W. Bolin

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