Features:

• 144 built-in mathematic functions
• Fraction functions
• Accurate 10-digit, 10-plus-2 display
• Backspace key to fix entry mistakes
• Single variable statistical calculations

Editor Reviews:

Product Description:
144-function pocket scientific calculator Combinations and permutations Logical operations 10 levels of Parentheses Time calculations (DMS) Trigonometric functions Powered by solar cells with internal battery back-up Convenient and protective case

Amazon.com Product Description:
For math and science students at all levels and for any home or office needing to make algebraic computations from time to time, Casio has created the FX-260 solar scientific calculator. An indispensable tool for students from high school onward, in lab classes, and for exams, the FX-260 features a two-line display, complex number calculations, and an algebraic mode, which displays the example precisely as written. Always powered up, it's useful as a household/office calculator for calculating finances, converting cooking measurements, and anything else you can think of when you wish you had a calculator at hand.

The clear, readable two-line display exhibits 10 digits in large numerals, showing the problem and answer together and permitting better tracking of your equations. With the Casio FX-260, you can quickly clear errors with the backspace key. You can also call upon 144 built-in mathematics functions and several fraction functions for basic equations and for fun. Plus, call upon the FX-260's basic scientific, exponential, and trigonometric functions for everything you need to complete your assignments and lab work. Key in and program formulas to save for future uses.

The Casio FX-260 provides one independent and six constant memory keys. It has a pragmatic key layout, making this an easy-to-use basic scientific calculator offering all the functions you'll need in a solidly constructed unit. Also, solar power means never replacing batteries. --Barbara Price

Rating : - The only calculator you need
This little calculator is my favorite calculator of all time. It has been the only calculator I've needed for Algebra, Trigonometry, Calc I, II, and III, Discrete Mathematics, and Differential Equations. I believe I've gone through enough fundamental classes to say with confidence that this calculator has every function you will need.

Things I love about this calculator:

1) Durable
2) Light
3) Small, doesn't take up much room
4) Cheap
5) Works in fractions (won't reduce them to decimal values)
6) Has all the trig functions
7) Even has a pseudo-random number generator
8) Has all the scientific functions you could need
9) Its x^y function accepts fractions for y

The only thing I would add to this calculator would be a logarithm function that I could assign my own base to (log_y). It already has log_10 and log_e, but sometimes a log_2 is useful as well, for instance.

I think the size of this calculator is perfect. It's small and thin, but not too small. The screen is perfectly readable, and the buttons are the rubberized type that provide a nice tactile feel.