Casio FX-115ES Advanced Scientific Calculator with 2-Line Natural Textbook Display | 
| Brand: Casio
List Price: $20.99
Buy New: $14.69
You Save: $6.30 (30%)
New (44) Used (2) Refurbished (1) from $9.99
Rating:  53 reviews
Color: Silver
Media: Electronics
Autographed: No
Memorabilia: No
Number Of Items: 1
Batteries Included: No
Battery: 1 LR44
Shipping Weight (lbs): 2
Dimensions (in): 0.1 x 0 x 0
MPN: FX-115ES-S-IH
Model: FX-115ES-S-IH
UPC: 079767171131
EAN: 0079767171131
ASIN: B000A3IAHM
Availability: Usually ships in 1-2 business days
| |
| Features:
| • | 279 functions, including 40 metric conversions | | • | 2-line, 12-digit Natural Textbook display | | • | Solar Plus power with battery back-up | | • | Slide-off protective hard case | | • | Currently permitted on AP, SAT and PSAT/NMSQT |
|
| Similar Items:
|
| Editorial Reviews:
Amazon.com Product Description
The Casio FX-115ES Advanced Scientific Calculator features over 279 functions and provides its user with everything they need for most mathematical calculations. The calculator's functions include complex number calculations, matrix and vector calculations, statistics, and 40 metric conversions. Its standout feature is its 2-line natural textbook display that displays fractions, formulas, square roots and other expressions as they would in your textbook. It is extremely versatile, and can be used in courses ranging from basic pre-algebra to calculus, and also has applications in physics, engineering, biology and statistics. What's in the Box
FX-115ES scientific calculator, slide-on hard case, instruction manual, and quick reference guide.
Product Description
The FX-115ES Advanced Scientific Calculator has 2-line Natural Textbook Display and is Solar Powered. An advanced Scientific Calculator that can do Metric Conversions and has natural 2-Line textbook display. Natural textbook display shows formula and results exactly as they appear in the textbook.
|
| Customer Reviews: Read 48 more reviews...
 Use it to help you pass the P.E. October 28, 2006
N. A Wheeler (Bronx, NY United States)
22 out of 22 found this review helpful
I bought this calculator's distant ancestor six or seven years ago in College and loved it ever since. The old model was the first calc that gave you graphing calculator editing capabilities in a small calc package and it was a steal for the $12 or $14 I paid for it then. This new generation is nothing short of a quantum leap forward. For the first time you can enter equations exactly as you would write them. The font switches to a smaller size, so you can review the whole equation at once. It also has a solver funtion that is intuitive and quick; I used it all the time on open channel flow problems, or any equation that would require more than mild rearranging of terms. This may be the only calc on the PE approved list that has this ability.
Other high points:
* excellent battery life and solar ability
* Table function
Minor quibbles:
* you may have to slow down the pace when keying in as it will miss keystrokes if you type too fast
* you have to hit Shift to get to 'X' (alpha) or Pi
* when editing an equation, very slow to cursor to where you want
 First non-RPN calculator in years June 4, 2007
Joel Kolstad (Wimer, OR USA)
18 out of 18 found this review helpful
I had an upcoming exam that specifically prohibited programmable calculators, so while I have quite the "stable" HP RPN machines, all of them were out. The FX-115ES was what I found as a substitute, and I'm quite impressed, especially for the price (which is $18 at Target, BTW). The machine works well and is quite feature-laden and easy to use -- I believe it is the most powerful non-programmable, non-graphing machine out there, and at a price where you can afford a few spares to spread around your home, office, car, etc. so that you don't have to worry about losing one.
I've had tons of calculators over time, with the Casio FX-4000P (back in the late '80s) being the first truly memorable one (my brother had an FX-7000G, the first graphing calculator). I switched to HPs in college, and I am still an RPN die-hard (I'm eagerly awaiting the release of the 30th anniversary HP-35s this summer!), but I can still appreciate a quality product such as this from Casio.
Best scientific calculator yet, but with some annoyances March 26, 2006
Anonymous
17 out of 22 found this review helpful
This calculator does some great things: solve 2nd and 3rd degree polynomials (quadratic and cubic equations), solve 2-eq-2-unknowns and 3-eq-3-unknowns (must be in the correct form), solve equations of any form that contain 1 variable type, convert degrees/radians, convert rectangular/polar, solve integrals/derivatives/summations that have numeric answers, it keeps answers in "exact" notations (a result can show up to be "5/2 pi", and press a button to toggle the decimal value), it can do simple matrix operations on up-to 3x3 matrices, it can accept an "f(x)=..." and produce a table of values when you input the start value, stop value, and step (you must limit it to 30 results), and you can input a bunch of data values and instantly calculate the mean and standard deviaion. The screen is huge, allowing for menus that haven't been possible on previous scientific calculators, and it's easy to enter fractions with lots of stuff in the numerator/denominator.
Some poor interface decisions were made. The "Shift" and "Alpha" colors are dark yellow and red, and it's hard to see the difference. There's no "X" key--you have to hit [Alpha] [X], yet there are keys for "M+", "^2", "^-1", and two very similar "log" keys; this is extremely annoying, as I use "X" all the time. When editing your input you can't hit [Shift] [right arrow] to jump to the rightmost side (as you can on a TI graphing calculator). If an answer is on the screen, you can't hit [square root] [=]; you have to hit [square root] [ans] [=]. It's annoying that you can't use "Polar(a,b)" or "Rect(mag,theta)" in Complex mode. Finally, just for fun, my own personal benchmark, "69!", is slower to compute than with previous fx-115 calculators.
The bottom line: a TI-89 is 10 times better in every way than the fx-115ES, having a much better OS, screen resolution, keypad layout, and much more robustness with all computations and variable handling. Standardized tests might prohibit graphing calculators but allow the ES, and it's the best scientific calculator I've seen.
Helps avoid errors April 3, 2006
A reader (Branchburg, NJ USA)
12 out of 14 found this review helpful
I agree with the views of "Anonymous" about this calculator. Rather than repeat what he said, I would like to point out that an important feature of this calculator is fractional input. This is important when there are complicated numerators and denominator (something like (45+ 6 sin(pi/2))/(sq root(1.006)*15.0987). Using this mode, the display type is smaller and the entire complicated fraction can be viewed in natural format. Not having a single line of type scrolling off the screen helps avoid errors. Usually, an entire complicated expression fits on a screen.
This is the best scientific calculator I have ever used, and I own calculators by Casio, Sharp, TI, and HP. I do think that the "best" calculator of all is the TI-89.
Bang for the Buck like non other April 23, 2007
S. Nair (USA)
10 out of 11 found this review helpful
Casio has always been about Bang-for-the-buck and they have gotten really good at it too. I loved the constants and conversion features. The only aspect i don't like about this calci is it switches itself off after a short while, often while you are contemplating what to do. This is annoying because all the previous calculations in memory or the value on the display get viped out. This is why I am stripping one star out of its rating.
|
|
|
