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Nice item- as we used to say: "Works fine, lasts a long time".
I got it for my 13 yo grandson as his school required them to get a TI-83+ or TI-84 for one of their courses. So far this one has performed as expected. Texas Instruments does a good job of supporting these products, and I downloaded a lot of documentation in PDF format, and burned it to CD-ROM for him- including the 827page guidebook!! It's a rather complicated device, a computer actually that is based on the ZILOG Z-80 8 bit processor which was used in several of the early 8 bit computers, like the KAYRO back in the '80s. The processor is embedded in a lot of 'microprocessor controlled' devices today so it is tried and true technology. He says it is doing the job for him and while it is not as fancy as the newer TI calculators, with color displays, you have to remember, mathematics really doesn't require HD color to be effective-- this I know as I still do some calculating on my old trusty slide rule, but then again, I am just a little bit old-fashion!!!
Verified purchase: Yes | Condition: pre-owned | Sold by: fogel1986
The screen does work as noted but powers on strange because of the button pattern needed to hold to turn it in and the wrinkled or damaged ribbon cable to the screen is bad because of the various screen effects. But the screen effect was not noted clearly in the description and only said that it has a boot defect and you had to hold two buttons to turn it on and it doesn't turn on normally. But the description said nothing about a screen issue. Overall I'm still going to keep it to repair.
Verified purchase: Yes | Sold by: tracl3882
Texas Instruments TI-83 Plus Graphic Calculator
Texas Instruments produces some of the most popular and well known graphing calculators in the industry. The TI-83 plus can do most any math problem found in Algebra I, Geometry, and even some Algebra II/Trigonometry. The wide screen allows for graphing equations and multi-line functions. The graphing capabilities of the TI-83+ are a superb choice for Algebra I classes. The ability to automatically find intersections and a variety of other important components of a graph are only key presses away. The calculator has a powerful matrix editor allowing for easy multiplication, addition,...Read full review and subtraction of matrices. Division of matrices is not possible. The list editor allows for statistical analysis of data both numerically and graphically. Graphically, the 83+ can plot data in several different formats. Anyone who is familiar with the BASIC computer language can program the TI-83+ with ease. The calculator supports the use of almost every function through a program. Programs can be typed directly into the calculator, or on a computer. The TI-83+ also supports a special form of programs called Flash Applications. Flash Applications are generally quite complex, and are written in a special language on the computer. Overall, the 83+ is an excellent choice for anyone taking an Algebra course or any math class above that. The calculator does basic arithmetic, graphic, statistics, matrices, and a variety of other mathematical operations.
I bought the TI83 for a math class that required a graphing calculator. The purchase went smoothly. I was able to download a manual from Texas Instruments and begin figuring all it's features. The class textbook helped a great deal. I was also able to download a more current version of the operating system which help immensely. The base OS is a bit dull. The upgrade made the graphs much sharper and easier to read. If you get one, check the Texas Instruments website for information on the free upgrade. It is well worth it. The TI83 has been around a long time and there is much written about it. It is a work horse educational tool, but it is also a bit long in the tooth. Newer and faster calculators are out there. Which new iteration, more features are added which add to the complexity of the instrument but also add to it's utility. As a base calculator it works well and fits my needs for the time being. Many undergraduate math programs still endorse the TI83/TI84. I suspect that if you are contemplating more work in engineering or the sciences, then a more recent vintage calculator would be worth consideration.
Handy calculator, solid and functional
Pros: The buttons layout are clear and have good feedback. Like and fairly large LCD gray scale screen. Have detachable clear plastic cover to protect the screen and keys. Uses 4 AAA batteries, I used the rechargeable type and last a decent period of time. Cons: Back is bare and scratches easily. All plastic and fairly bland looking calculator. A bit pricey if purchase new. Not pocketable. Overall I think this is a good value. I wouldn't pay full price though and get it at Ebay at half of the price. Fully functional and suitable for high school to college.