Editorial Product Review:Item Description:Solar-powered calculator for science and math Base conversion and calculations (Decimal, Hexadecimal, Binary, Octal) 15 Parentheses levels 3 memories 8 Physical constants Up to 4 pending operations Includes A76 battery (pre-installed), case and instructions
Amazon.com Item Description:Ideal for students at every level, from junior high school algebra to college calculus, the Texas Instruments TI36 packs a lot of punch in a small, inexpensive unit. This solar-powered calculator combines features for statistical analysis, Boolean logic operations, and unit conversions in one sleek package.
Math students will appreciate TI36X's ability to perform fractional equations and calculate angle units (radians, grads, degrees) when performing trigonometric functions. Everyone will find the calculator's English/metric conversions helpful.
The TI36Xs single-line LCD is a little difficult to read when the unit is lying on a desk, and users in need of graphing functions will have to look elsewhere. Overall, however, for a calculator in this price range, the TI36X provides enough power for most high-level math and science needs.
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Buyer Reviews
Average Buyer Rating:
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Great Calc!
Well this is my first solar calculator and I must say its ingenius!! Just think you'll never need batteries and it won't die on you in the middle of a test or project.
I used this for my statistics class and it is a great tool to have.
Customer Rating: 
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Great for applied science and algebra through calc.
I LOVE this calculator. I bought this when I returned to college about 3 years ago, and it's STILL going. If you can purchase this model of the 36x it's BETTER than the update. It works well in low light (in a living room with one lamp) and is still able to be read.
This also has a couple of memory buttons to input your own constants or equations.
What I really love about this calculator is all of the chemistry constants available on it. It has Avagadro's number, the speed of light, and more. The updated version also has these functions, and it is a little easier to use ergonomically.
Customer Rating: -
Great especially for chemistry students
This is a great update to the black 36x with it's ergonomic design. It has the same features as the 36x with chemistry constants and lots of various math functions.
The downfall to this is that it turns off in low light, unlike the black 36x.
The keys are spaced wide enough for fast input. Has some memory functions. Easy to use. I highly suggest this to anyone who is a science major in college.
Customer Rating: -
TI-36X Calculator Review
The TI-36 series is my all-time favorite calculator. Powerful, easy to use, and an outstanding value. I have the older TI-36X (black, with a slide-on-off cover). This is my complaint, "If it ain't broke don't fix it". The older TI was distinctly better. This is what happens when the Styling Guys get a hold of a great design and mess it up. Yes, it's still a fabulous calculator buy, but the new cover is a clumsy snap on-off design that's hard to use, the keys have poorer legibility, the sides are shaped so that it's slippery and easy to drop (I did four or five times). The solar-cell has always been a little anemic (not working in subdued but usable light), and the new model is worse in this regard. This is still the best calculator value out there in my opinion, but the original design was superior and in every respect. Not a good trend. I can only hope that TI will return to the older design, with a backup coin-battery for dim lighting and make this the PERFECT calculator. I consider this a still great calculator but I give it's predecessor the full 5-star rating.