Texas Instruments TI-86 Graphing Calculator
From Texas Instruments
Customer Reviews
Great service
The product is wonderful. Nothing different that other models.
The seller has excellent service too.
Sixteen Years & Going Strong
I bought mine in October of 1992 as electrical engineering student. In 16 years, it has never left my side. It is intuitive to use, intelligently designed, has lots of handy features built in and is as tough as a VW Beetle. I've dropped mine (and sat on it) more times than I can remember and it has suffered no problems whatsoever.
I recently added up how much money I have earned (so far) with this calculator, and the TI-86 is easily the single most cost-effective purchase I have ever made in my life.
I've hoped for an upgraded version, such as more memory or a colored screen, but honestly there is no compelling reason to upgrade. If I ever need more, I'd probably start with a pocket PC and go from there.
After sixteen years of great service, I'd only buy another TI-86.
"Have calculator, will travel."
Reliable, Durable, Great for Most Applications
I have been using my TI-86 for 8 years now and it has never had any kind of problems.
I have left this calculator out in my car during the freezing Michigan Winters for weeks on end as well as the 100 degree Summers for the same amount of time. Never a single problem with the calculator.
The calculator has done almost everything I have needed of it all the way through Calculus and Linear Algebra. With that said, the TI-89 and others have much more utility for the high end courses, and are not hugely more expensive.
If you are going to be in a lot of college courses that have high end mathematics, then I would go for the TI-89 or other higher end calculator. If you aren't then it might be worth saving a little money on this incredibly durable calculator that will likely do everything you need it to.
Amazon.com Product Description
Designed with power users in mind, the TI-86 graphing calculator has all the power and functionality of the popular TI-85 but with significant enhancements aimed at students of college mathematics, engineering, and science. The TI-86 includes a function evaluation table, deep entry recall, seven different graph styles with multiple line and shading options, and slope and direction fields for differential equations. In addition, the TI-86 boasts 96 KB of user-available memory--three times more than the TI-85. There's also a new function evaluation table which shows numeric output for function, polar, parametric, and differential equation modes.
The TI-86 runs with programs designed for the TI-85 and includes all the same matrix features, but with a new matrix editor that allows the user to view and edit matrices in two dimensions. You can also view multiple lists and attach formulas to those lists for automatic computations. A new aspect of the TI-86 is the ability to customize product functionality with machine language programs downloaded from TI's Web site. Besides the strong graphing abilities, the TI-86 also has powerful calculus features like integration, derivatives, minimums, maximums, roots, and arcs. It also supports Z80 assembly language programming.
The 64 x 128 high-contrast pixel screen displays eight lines of 21 characters each plus two levels of display menus. With the TI-86, you can link to other TI-86s and TI-85s via the input/output port, and to CBLs, CBRs, and computers. --Dana Van Nest
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