Texas Instruments TI-85 Advanced Graphing Scientific Calculator

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

Customer Reviews:

TI - 85 Overall, a good graphing calculator. [Posted on 2003-01-18]
With a large number of features and a huge range of functions, the TI-85 is a graphing tool that is well worth its cost. It is fully programmable, using a BASIC-like programming language. Texas Instruments discontinued this line of calculators however, and though they may have had their own reasons, I know of at least two flaws with this particular calculator. The first is that there are some bugs in its programming, such as its inability to convert negative temperatures. The second and much more serious problem is that the screen is not reliable. Roughly half of these calculators have one or more lines or columns of pixels fail after a few years of use. As long as you aren't paying retail price, however, the $$$it might cost for a used TI-85 is more than worth it. Enjoy.

Excellent Investment.. [Posted on 2003-03-25]
Its an excellent investment for engineers. The Calci helps a lot in mathematical calculations. It has a Huge number of engineering applications. Few applications which I found VERY Useful are

(1) Inverse of a Matrix (2) Solving Quadratic and higher order Equations. (3) Plotting the graph of Algebric Equations which help in finding out the Maxima and Minina..

regards,
A Graduate Student

replaced my TI-30 Stat [Posted on 2003-09-10]
I used a scientic calulator for years. I bought the TI-85 my Senior year of High School and even though I'm not yet in college (five years later) I'm still a nerd that likes to play on it. most of time I just use it for basic stuff I can still do with a new TI-30X I bought granted I can graph with it and I've been looking hard at TI-89 for no other reason than I can. (more than likely would be my next purchase if I did buy another one) the sad thing is resources for this calulator are limited seeing as it's been discontinued but you know it's still more powerful with it's computing power over my GF TI-83 plus. it just lacks the storage of memory.

The calculator did not work [Posted on 2005-09-21]
The calculator did not work when I got it even after putting new batteries in it so I contacted Mr. Carlson. He was so nice and got right back with me. He apoligized for it not working and said that he would return my money. And in a few short days, I got a check in the mail from him. I found him to be a very nice guy and very true to his word.

That calculator is not the TI85 graphing calculator from Texas Instrument. [Posted on 2006-10-05]
Don't get me wrong but that calculator shown in the picture is not the TI-85 graphing calculator from Texas Instrument. I have no idea what that thing shown in the picture is.

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