Casio Graphing Calculator
Posted by in Graphing CalculatorCasio FX-115ES Advanced Scientific Calculator with 2-Line Natural Textbook Display
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.
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This calculator is as good or better than my TI 83 plus for much less money. Full price this calculator is only 49.99. I found for even less elsewhere. The graphical icon menu makes it very user friendly without having to study the thick manual.
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I bought the Casio fx-9860G Slim Graphing Calculator because of the combination of enhanced and easy to use functionality, with a superb display. After previously using other powerful calculators with tiny font sizes and confusing/massive instructions at times, this is a major step up. It has everything needed for most mathematics – calculus, equation solvers, stats, spreadsheets, graphing, programming, recursion etc. and once connected to the Casio Web page using the included Casio software link, other apps can be added – the geometry app is fun and useful. For the cost, this clobbers the higher priced competition – I donated a calculator that cost twice as much to my employer’s charity Christmas raffles. I had given up on calculators in favor of laptop/PC based math codes, but now it is fun again to use a calculator for courses and to just sit back at work sometimes & crank the numbers while going through tech. publications.
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This is the best graphing calculator you can buy for under $100, period. I teach mathematics, and have used everything you can imagine, from TI to HP to Sharp and Canon, and this is the fastest sub-$100 graphing calc out there, nearly twice as fast to draw functions as the TI 84, which runs at least $20 more ($35 more at educational prices). It is also faster than my first generation TI89, and unlike the TI89, is legal to be used for ACT and SAT tests.
The menu navigation takes a few minutes to learn, but then it is easy, and much faster to do most things, compared to the TI and other calcs. For instance, it takes four button presses to find the zeroes of a quadratic, rather than the nine (or more) it takes on a TI.
The USB port means you can use it to write to a computer screen with the downloadable software, as well as use the computer to write to the calc; (you must supply the USB cable), and you can also hook to other Casios with the included non-USB wire.
The manual is online, or in a CD included with the calculators I bought. (is that still true?)
The screen isn’t the best around, but is plenty good enough for my 45 year old eyes.
If you want a calc that will get you through anything from Algebra to Calculus and beyond, this is the one.
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The 9850GB is excellent calculator for the money. I bought this the 9850GB apx. four years ago after my TI-85 (what ever happened to that model anyway??) got stolen. I’m glad it did, the 9850GB is much easier to use.
I am an Engineering student and used it constantly. Oh, and the review that says you can’t play games on it…they are wrong there are numerous websites with game programs on them that work just fine. Another review stated that most teachers don’t explain how to use this model, this is true; however, it’s also true that in college professors don’t explain how to use any model.
Also note that this calculator is very easy to program for.
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In my whole life I have owned ten calculators made by five different manufacturers, with TI accounting for four of them. I enjoy discussing the pros and cons of the various models with my friends and I have come to realize that choosing a programmable calculator is a very personal, even subjective, matter. That is why I respect different opinions about calculators, even if I do not fully agree with them. Sometimes the choice of a calculator boils down to a much-needed feature. This is true in my present case. My favourite calculator so far is the Casio Algebra FX 2.0, and that choice hinges on one vital feature: the ability to process matrices containing complex elements. Whereas some other calculators can handle matrices, they usually handle only those containing real elements. As any electrical engineer (like myself) can tell you, this seemingly small difference is critical. Anyone who does circuit analysis with inductive or capacitive components will encounter matrices and simultaneous equations containing complex elements. Complex matrices take ten times as long as real matrices to calculate, and the calculation is very error prone. It is precisely here that many textbooks (e.g. Hughes Electrical Technology) make numerous calculation errors. It is so easy to overlook the simple fact that the square of i is minus one, and when you make that one mistake, it ripples through the whole matrix. As far as I know, the Casio Algebra FX 2.0 is the lowest cost calculator that can handle complex matrices and complex simultaneous equations. By comparison, the TI-83 (which costs the same) can only do real matrices. The TI-86, on the other hand, can do complex matrices, but it is more expensive…. I have examined the other features of the Casio FX 2.0, and have been impressed by their depth. As to its ergonomics, the keys have a nice feel, the LCD is sharp and clear, the plastic case is solid, and the calculator does not wobble at all. My only complaint is that the PC link cable is an optional extra (a real letdown).
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The major drawback of the Casio classpad 300 was its screen. The constrast was so poor that it was hardly usable at all.
Now Casio have replaced the Casio Classpad 300 by the Casio Classpad 300 PLUS, with a dramatically enhanced screen. The constrast is now very good under most lighting conditions. The operating system has also been enhanced, offering amongst other things a choice between the standard characters set and a bold characters set.
All in all, this makes the Casio Classpad 300 PLUS one of the most powerful, integrated and easy-to-use graphing calculator ever.
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