[+]
10.0
Nice calculator for a programmer
I have always liked Casio calculators for their value, durability, and ease of use. I found very few calculators out there that will convert between Decimal and Hex, Octal, and Binary, which is essential to my job as a computer programmer. It also has trig functions that I use every day, as well as DMS conversion, radians, and fractions, just to name a few. It has far more functions than I'll ever use.
It has both battery and solar power. The screen is 2-line and easy to read. It uses the new method of input which I have yet to get used to (and I dislike tremendously, but then I'm Old!), so you hit Sin 45 =, not 45 Sin. I wish it had a 1/x key, but maybe that doesn't apply because of the input method. At least you can see what you entered on the top line in the event you make a mistake. It's inexpensive and well worth the money.
The buttons are way easier to enter than a texas instrument calculator and it's probably only rivaled by a graphing calculator. A must buy for students in science.
Good scientific calculator. I'm more of a texas instruments fan myself, but this one can do those calculations just as well, it's just harder to read, learn, and understand with the Casio. It doesn't have visual appeal either.
[+]
10.0
Excellent Calculator
I've been using a Casio that I bought from the 90's. I decided to upgrade and I was nicely surprised on the features. The two line makes it easy to see if you entered a problem wrong. There are buttons with kilo and milli units so you can hit 5k to enter 5 kilos. The calculator can also integrate and do defferential calculations but it does take a minute sometimes. The only setback is that the instructions that came with the calculator are poor.
I've always liked Casio calculators for being cheap, extremely reliable, and durable. I got this one to replace my last FX-115 of 7 years which was accidentally doused in hydrochloric acid. This has a two line display, as well as a ton of functions (from stats to that suit the needs of the middle school student all the way to the college student. A solar panel means you will never have a "dead calculator" for homework or an exam, but the battery lasts for at least two years anyway.
[+]
10.0
Everyone is jealous
Everyone gets jealous when they see my FX-115MS with S-VPAM. Even the TI-89 jockeys get red in the face. This little math machine can do anything except graph with the same computational power as some of the big-boys at 1/10th the cost. Best calculator I've owned, hands down. Blows anything in the same price range by TI, Sharp, or any others right out of the water. I'm always finding new helpful functions as I take higher level math courses, it hasn't left me stranded ever.
Good for chemistry, AP chemistry, geometry, precalc, calc, physics... I've had this little computer since freshman year of high school... Now I'm a freshman in college. I don't see anything else replacing it, except maybe the newest in the FX-*MS line, even in graduate school.
[+]
10.0
BEST CALCULATOR EVER OWNED
It got me through high school/college(UMICH) Pre-Calculus and Calculus. Always had it on hand next to my extremely bulky TI-84 (Plus) which I only used for graphing.
It is very slim and comfortable to use. Plus, it has a solar power "thingy" just in case.
I really love this calculator and did not expect anything less than this from CASIO.
Now lets see if it will get me through CALC II.
[+]
10.0
The End All Be All of Easy to Use Scientific Calculators
What can I say? I love this calculator. Not only is it easy to use, but its the perfect size, weight, and shape to fit in your hand. The thinness is wonderful and the click on case is great for storing notecards in between it and the calculator. Its two way power which is great. Function button placement is logical. I've been using this calculator for 3 years now through all my chemistry and physics courses and can honestly say I would never use another.
PS you can definitely say that I have converted from the TIs!
[+]
10.0
Great gift for someone who wants it
My older brother likes the larger numerical display. This model is very comparable to the FX-115ES, but from what I know has the larger numbers.
i borrowed my friend's caculator for several months and she just used this one.So i bought this casio caculator.It is good.
[+]
10.0
An excellent scientific calculator!
Yes, you're going to eventually need a graphing calculator at some point in time, but compared to other scientific calculators, this calculator is virtually unparalleled. Everything's quite easy to find on this calculator, and it can even solve moderately complex equations for you. The numbers are displayed quite clearly in a large fashion, so you won't have to strain your eyes to read them. As an added bonus, this calculator's also extremely durable - mine got run over by a car once (don't ask how, I don't know), and it's still in perfect working condition. It's cheap and it's effective - if you're in need of a scientific calculator, pick this up quick!
This product was just what i was looking for and it got here in a very timely fashion. Was a great buy recomend it to everyone
[+]
10.0
Great Calculator
This calculator is perfect for an electronics tech. The metric symblols (T,G,M,k,m,u,n,p,f)let you easily enter engeneering notation for quick calculations. I have not seen this feature on any other calculator, so I bought myself a backup!
I've been addicted to my TI-89 platinum since I got it. However, this is an excellent substitute for when I can't have it.
All I have to say is that this is by far the best calculator for the FE exam. (Make sure yours is solar powered.)
[+]
8.0
Casio for FE Exam
This calculator has so many functions to use that will be useful in the FE Exam, however, it becomes really difficult to figure out how to use these functions. One thing I found is that you cannot convert decimal to fraction while in engineering mode. Other than that, it is very useful.
[+]
6.0
Good, full-featured but a little short. . .
I bought the 115es originally, and for some reason, NCEES disallowed it from the FS/FE exams, so i also got the 115ms. Note, NCEES appears to be allowing the es again; the approved Casio model has to be a FX-115 model, no designation as to it having to be the ms.
So the ms is very nice! Very clear, crisp display, intuitive keyboard, these things being better than the es. The ms is also full-featured, having solve & calc functions (very handy), ability to do derivatives, integrals, quad & cubic equations, solve simult equations of up to 3 unknowns, full statistics capability, etc. But the ms will basically be relegated to being my backup to the 115es, because the es does everything the ms does, and has unit conversions, scientific contants, matrix, table, and vector capability; in addition to being more user-friendly in toggling between the desired mode of operation or setup style.
I'm really not sure why Casio offers 2 such similar platforms, separated by a minimal price. . . i mean for the money, why wouldn't you get the 115es? Hopefully, NCEES will not exclude the es from its approved list again (totally don't know why they did in the first place). But comparing either casio model to the approved texas instruments models, or the HP models, the casios offer great value & practicality, without a huge learning curve.
If you're not remotely concerned w/ any of this NCEES speak (i don't blame you), buck up to the 115es. For a few $$ more than the ms, it provides a lot more features.
[+]
10.0
Excellent functionality and ease of use for a great price
This calculator was recommend for an AC Physics course I'm taking and it is a great deal.
Two things that are particularly great about this calculator are that you can enter scientific notation prefixs (p for pico, n for nano, etc.) so you don't have to do the conversions in your head.
Another highly useful aspect for electrical and engineering applications is the ease with which you can enter polar and rectangular coordinates. For most calculators I've owned they either lacked the feature entirely (it is rare to find polar and rectangular support in calculators at this price range) or were extremely clumsy to enter and use.
It also appears to do differentiation and integration (a surpise for such an inexpensive calculator) but I haven't had need for those in my current courses so can't say how well it does them.
[+]
10.0
Engineering Student's Best Companion
I think this calculator is great for both high school and college students, because it has virtually everything a student needs out of a calculator...low-cost, reliability, durability, long list of functions, standard features and more...I think even professional engineers might appreciate this calculator...Within it's price range, I think it's the best one out there.
Love this calculator. Very inexpensive and gives you everything you need. Lacks the graphing of a graphing calculator, but who really needs that in the real world. If you are looking for a great calculator with everything, but don't need to spend over a hundred bucks for graphing functions, get this calculator.
It came in the condition described, came by the estimated shipping date. I would definitely buy from this company again. Very reliable.
[+]
10.0
Good for FE exam
I like this product, and also good for FE exam. But I suggest you need practice & become familier with the product before taking to exam.
Excellent product, very good price, reasonable delivery charge and fast delivery. Ease of ordering.
Thank you Amazon, may you live long.
[+]
8.0
got it for PE exam, now I use it every day
This was one of the few calculators on the list for the PE exam. It was also the cheapest (I think). I bought it, and started practicing with it at work so I'd be comfortable with it at the exam. It turns out that I love the data entry format. I used HP's RPN for a LONG time and thought it would be difficult to switch, but this makes even more sense because you enter the problem EXACTLY how you would write it on the paper (i.e. square root sign comes BEFORE the number)! I don't even use my trusty old HP now unless I accidentally leave this one at home. I am even thinking about getting a 2nd one so I can have 1 at work and 1 at home to study with (and I've heard that sometimes calculators walk away during lunch hour at PE exams, so it might be good to have a 2nd hiding in my bag).
The only flaws I've found so far are the instruction manual, quick auto power-off and the plastic cover. The manual does not go into enough detail but there are several references available online so, not a huge deal for me. When I get close to the exam, I'll probably print out my favorite and take it with me. The quick power-off (after about 6 minutes) can be frustrating, but I haven't really had a huge problem with it.
The plastic cover is annoying because it snaps on and off instead of slides. I don't know why this bothers me, it just does. Also, it would have been nice if the cover was flat. Instead, it is slightly rounded with "feet" to stabilize it. The feet work great as long as the entire calculator is sitting on a flat surface but if one corner is off, the whole calculator rocks back and forth every time you hit a button. Also, with the cover snapped onto the back, it is kind of uncomfortable to hold in one hand and enter data. With the cover off it is better, but I'm worried I'll loose the cover.
I am definately happy that I purchased this calculator instead of the more expensive HP that was on the PE approved list.
This little thing is really a gem! I'm shocked at how much math a $20 calculator can do. Really helped me get through the FE as this thing solves quadratic & cubic equations, and even does numeric integration and differentiation! A very well designed tool.
[+]
10.0
Best calculator I've owned
Does everything I need it to do for engineering classes without all the extra frills and distracting buttons people never use.
[+]
10.0
Excellent calculator for the price.
I bought the HP 33S last year for the sole purpose of taking the PE. I have been using HP calculators and the RPN logic for more than 20 years and felt very compfortable with it; however, the 33S was a dissapointment to me, for one reason, good luck trying to see the decimal point, so 33.457 looks like 33457, that one little thing turned me off from using the 33S, so I went and purchased the casio fx-115MS, what a calculator!!! So many functions, and ease of use, the two lines are a beauty, and the numbers are huge, and don't forget the decimal point, I can really see it. I think I'll buy another one as back up. Now, if only the Casio can take the PE test for me!
[+]
10.0
Casio FX-115MS, a very good calculator
I have been a faithful user of the HP 48G since 1995. However I needed a calculator that is permitted on the EIT exam. Since I am comfortable with Reverse Polish Notation entry format, my first inclination was to look for a HP product that is approved for the exam. However after reading the reviews on-line and seeing the price of the HP33S, I decided to look for an alternative. The TI 30XIIs and the Casio fx-115MS were viable options at a better price. I bought both of the TI and the Casio for comparison.
Both calculators are about the same size, approximately 6"(T)X 3"(W)x1/2"(D). The feel of the buttons/keys on the TI was a bit dull when pressed. The Casio keys had slightly more engaged-feel when depressed. The engaged-button feel helps when I am keying numbers without looking at the screen to know whether the calculator took the string of digits and operators correctly. The color scheme employed for button labeling on the TI does not make the "2nd" functions stand out. This is made worse by the shadow cast by the tall buttons, which make the lettering for the "2nd" functions harder to read. The Casio uses fairly distinctive colors for lettering and function schemes. This makes it easier and faster to find the correct key.
I find that for engineering problems, Casio had more built in buttons. Thus I don't have to always use "shift" or "2nd" functions. I also liked the layout of the buttons on the Casio. I feel it is a bit easier to find the right keys, due to more logical key placement for certain functions. On the TI, I have to spend more time hunting down the button.
A few reviewers have noted that the Casio manual that comes with calculator to be mediocre. That is also my perception after reading through the manual. The TI came with a manual and a practice guide. The TI manual is more thorough and sequential in presenting the information. The TI practice guide presents some simple problems and show the keys that need to be pressed. This helps get the user to become familiar with the key layout and input sequence.
To overcome the mediocre Casio manual, I searched on the internet and found a tutorial on how to use the fx-115ms written by a math instructor for his or her students. The tutorial is fairly detailed and easy to follow.
Overall, both the TI 30XIIs and the Casio fx-115MS are very capable calculators. However I found the Casio to be more suitable for my needs. I would give this Casio product somewhere between 4.5 to 5 stars.
[+]
8.0
Good calculator, but something to be desired
It's a good calculator for engineers and scientists. The price is not too high for its functions. The two-line window is convinient, and the size of the alphanumeric characters is appropriate. Using both solar cell and dry batteris, it saves operating cost also. Touch bottons work very precisely and nicely.
Overall it's a good scientific & engineering calculator for its price. Two shortcomings may be improved hopefully. First one is its automatic shut-off function. Hope the company gets rid of this function, or increase the shut-off time to 1 hour or so. If you are idling, the calculator automatically shuts off within 6 mins. This time is way to short for many many calculations. Sometimes we have to stop and recheck the problem statement or written equations. While you are rechecking, the calucaltor shuts off, and you never be able to resuscitate the equations you typed in before shut-off. Duh..
Second, the case must be improved. This case (or plastic cover, if you will) is supposed to be put under the calculator, but the shape of the cover is round, and it wobbles when you punch the bottons.
I bought this calculator specifically for the FE exam and didn't have a problem using it. It's a little different than the TI that I'm used to, so I had to accustom myself to it. At any rate, it did the calculations necessary to complete the FE.
Its cul...nice..handsome..metalic...never seen a cac like tat..I LOVE IT>.ma friends said cul...to everyone..did...works well//nice design andf interface and everythin...i like it soomuch....GOOD!! ONLy thing i hate is tat its too good!!LOL!
[+]
10.0
Great buy - no problems!
No problems with the order and received it very fast.
This inexpensive scientific calculator (Fx-115MS Plus) has many desirable features:
o two line display with clean input/output functional separation (unlike the Sharp 506W)
o expression recall and editing
o highly visible recessed display (unlike the Sharp 506W)
o roomy and well-organized key-layout
o great tactile feedback
o hex/oct/bin bitwise operations
I love the brushed stainless, low-gloss, look and the calc body is narrow enough to permit one hand operations.
It also comes with a nifty equation solver, which unfortunately is not well documented. At first I thought the example given (B=AC-(1/2)DC^2) needed be rewritten (AC-(1/2)DC^2-B, implicit [=0]). However, I was using the wrong {alpha}{=} key sequence to enter "=". What must be used is {alpha}{calc}--the {calc} key has an alpha tertiary label "=". The solver is also slow. A Time Value Money interest solution required 55 seconds, whereas on the HP33s the same evaluation was completed in 7 seconds. What impresses over other units in this price range is that prompting for variable input supports a large subset of the expression grammar (no references to other variables are permitted).
Expression history and editing have a few quirks. No flashing cursor to show initial insertion point. An initial {<} positions cursor at the far right! The default edit mode is "overwrite" not "insert" which is true for most text editors--why not work with user assumptions?
However, as one reviewer previously mentioned, the major shortcomig of this unit is the clearing of equation history on power down. Since there is no equation memory (as on the HP33s), the least Casio could have done is NOT make equation history clearing automatic. Power it down or leave it idle for more than six minutes and those equations you've labored over are gone!
Sleek, svelte, and sometimes elegant but an empty slate.
[+]
2.0
If you see a 20$+ price on Amazon
The list price is wrong. The MSRP from the Casio site directly is $14.99. At that price. I'm sure its a great calculator, but if Amazon is trying to sell at 20$+ I would go for the $19 FX-115ES instead. Better value for money.
I am in the US Navy, in the Avionics the and it is the calculator of choice for Avionics Technicians doing trig and electronics calculations. Makes the higher level problems and equations a breeze. If this calculator makes those quick and painless; lower math will be like a warm knife through butter.
Nice calculator, but the loss of all formulas or expressions on shutdown is indeed crippling. You go to the bathroom, and that 44-character formula you were working with is gone.
Also, the SOLVE function doesn't work as advertised in the manual, at least on my machine. The manual suggests that you can solve B = AC-1/2DC^2 using the SOLVE button. I could not get a prompt for the value of B. The only workaround I found is to make the expression equal to 0, with everything on the right side of the equals sign. Then I got a prompt for B, and it works. An explanation is perhaps that my Solve button doesn't connect (SHIFT-CALC) and I'm only getting the CALC function which works on expressions but not equations. I notice the Casio web manual leaves out the SOLVE function.
[+]
8.0
Casio Fx-115ms plus
great calculator, integrates, derives, solves, only problem is figuring out how to do this. But best calculator for the Fundamentals of Engineering Test.
[+]
10.0
Great Calculator
It's great for chem, and math. Great two line scroll display. Functions are easy to read.
[+]
8.0
Powerful, Excellent Value
This powerful non-graphing calculator has over 300 functions, a two line display, and you pretty much enter algebraic expressions as they're written (just be careful to use parenthesis and order of operations). An overlooked feature is its dual power mode. If there's enough room light it runs off solar power, preserving batteries. No worries of the juice going during your final. (I'll take this feature this over extraneous, additional, functions of that new Sharp calculator.) This calc has MORE than enough in terms of functions, power, and various equasion, complex number, and statistical modes. In terms of pure number crunching power, this calculator blows everything else away in its price range, except perhaps the latest Sharp. A co-worker who has a Master's in math took a look at this and told me it's all the calculator you need, all the way up through graduate school.
Just note that this is NOT a symbolic algebra calculator - that is, it will attempt to solve for (multiple) variables, as in X=2.453. However it won't expand, group, or simplify algebraic expressions. Don't expect to enter (a+b)^2 and get a^2+2AB+b^2 back, or vice versa. For that, you'll need the much pricier TI-89 or TI-92 Plus, which has a symbolic algebra mode.
However, if you want the most bang for your buck, go with this over the lower-end TI's (imo) and others. Much more power for the same money, and this is very nicely designed.
Documentation is spartan but it'll get you there. Just have a magnifying glass handy or download the PDF file from Casio's site. The upside of having a small fold-out user guide is that you can always have it near your calculator. I keep mine rubberbanded to the calculator's case, so it goes where my calculator goes. (Having a 260 page book would negate the calculator's portability, wouldn't it?)
Some nice math instructor of few reviews down put together a great supplemental document for this calculator with some good examples. Highly recommended if you buy this calculator (and thank you).
Excellent product. Subtract a point for not having a more detailed downloadable user's guide with more examples on Casio's website. I can see not wanting to drive up the price by including a paperback book, but c'mon, Casio. It's 2006! We have the Internets and pdfs now!
good beautiful and cheap calculator.
[+]
8.0
Pretty good calculator for the money
I had to buy a new calculator due to recent changes in NCEES (National Council of Examiners for Engineers and Surveyors)
calculator policy. I chose this one since I didn't want to spend $50 on the HP33s and the others seemed awfully lacking in features.
The Casio FX-115MS is a good little calculator for $15. My only complaints deal with how it handles complex numbers:
* Complex numbers are ony handled in a reduced-functionlity mode.
and
* Only one of the terms is visible at any one time-- in cartesian mode either the real or imaginary part is displayed. In phasor mode only the magnitude or angle is displayed.
I still prefer my fifteen-year-old HP42s, but this little casio, had it been available when I was in school, would have been a fine alternative and much less expensive.
[+]
4.0
Solving quadratic and cubic equations
Entering the EQN Mode and pressing the "right arrow" key, does not display the quadratic and cubic equation screen and as a result I can not solve these types of equations, which I need frequently.
Other than this it looks yet ok to me.
Thanks.
Zaman.
[+]
10.0
Great calculator - needs better user guide
The Fx 115 MS is the most powerful non-graphing calculator I have used. It is ideal for non Math students who are required to take an intermediate college algebra class. Unfortunately the single sheet of instructions are insufficient for the type of student that would benefit the most from it. I have put up a web site for my intermediate algebra students that tries to explain to them how to take advantage of its many features: http://faculty.ccc.edu/jnadas/graduate/CASIO.fx115ms.HTM
[+]
10.0
Excellent calculator for general use and high school
I bought my Casio fs-115MS Plus-SR scientific calculator for $15 at Staples and have been completely satisfied with it. This calculator, in addition to basic calculations, has keys for functions in algebra, geometry, trigonometry, statistics, pre-calculus, etc. It weighs under 4 ounces with battery and cover, and the keys are big and reponsive. Most of the basic functions are intuitive, while you'll need to study the user's guide for the more advanced functions and modes.
Specifically I like the following features:
- Lots of calculator functions as I mentioned earlier.
- It has a solar cell and also a button battery, so during the day it uses solar power, while at night it uses battery power. There is no backlighting, though, as this is an inexpensive model. Also, replacing the button battery (LR44) requires unscrewing the back off. Luckily, the battery should last at least 2-3 years under moderate night-time use.
- It has a two-line LCD display. The B&W LCD is very sharp and clear. The first line displays the formula you entered, and the second line shows the result.
- Intuitive interface. The buttons are clearly marked and it doesn't take any time to get started on the basic functions. Things like square root and logarithm are also easy to figure out. Casio calculators have always had consistent user interface over the different models.
The one thing I wish were better is the cover, which is the detachable type. It takes a bit of effort to detach it. To Casio's credit, the cover can be attached to both the front (for protection) and back (for storage) of the calculator.
In short, the fs-115MS Plus-SR is a terrific scientific calculator for its excellent price. Its dual power source ensures usability in most situations.
This Casio is "permitted for use on SAT and PSA/NMSQT."
[+]
8.0
No longer such a good choice
For the money, a completely superior machine is the new Sharp EL506WBBK; it's easier to use, more versatile, and it has continuous memory. Search Amazon for B00027RVVW.
[+]
10.0
another impressed engineer
This thing is a fully functional engineering grade calculator. I purchased this calculator a year ago for taking the Professional Engineering exam (The TI-89 was banned last year) and I figured that I better get use to using it if I were to use it on the test. It was simple to use. It was quick, it was powerful. The linear equation solver was faster to use than the one of the 89 which really impressed me (great for solving electrical circuits).
Overall, I highly recommend this calculator.
It has now become my primary calculator at work.
This is an outstanding machine. The keyboard layout is terrific. The one stroke Ans key, and the ability to call up and reuse old expressions are priceless. If it weren't for ONE thing, I'd put my TI-89 away and use the 115MS all the time. (Really tough computations are done on the computer, anyhow.) a) When the 115MS goes off, ALL THE OLD CALCULATIONS are lost, and b) The calculator TURNS OFF AUTOMATICALLY (with malice aforethought!) after a few minutes.
What are you thinking, Casio?? It almost seems as if they deliberately crippled this machine, so serious users would have to buy a more expensive calculator. The problem with that is, the more expensive (eg. graphing) machines are almost impossible to use due to "creeping elegance" (an old term that should be resuscitated). There are so many hundreds of functions, the simplest functions get buried under layers and layers of menus.
I can't tell you the number of times I've REALLY NEEDED an expression I put into the calculator a day ago, a week ago, even a month ago. Very frustrating. I have a few minor quibbles with the function set, and the way the editing keys work, but if they just got this one detail right, I'd fork over $100 for one of these babies.
But for now, until somebody gets it right, I'm forced to struggle along with my TI-89 and its creeping elegance.
[+]
10.0
Cassio vs. Sharp
I have purchased within the last two weeks both the Casio fx-115MS and the Sharp EL-506VB calculators. If you enter (21)2 in both calculators and then press the equal key, the Casio will display "Syntax Error" and the Sharp will display "Error 1.". Why is an error message displayed in both calculators? Does this mean that there is the same "bug" in both calculators?
On the other hand, if you enter 2(21) in both calculators and then press the equal key, both calculators will generate 42 in their respective display areas. It must be that each calculator's design is such that both do not recognize an "operator" (addition, subtraction, multiplication, or division) when a number enclosed in parentheses is immediately followed by another number.
If you enter (21)2, both calculators recognize it as an error in "syntax" or rules by which either unit can calculate or perform an "operation." You did not enter an operator so the calculator cannot perform any calculation. In the first case, (21)2, no operation (multiplication) is recognized by either calculator and as a result, both units generate the "error" message. In the second case, 2(21), both calculators recognize the "operator" (multiplication) and performs the operation to arrive at the correct answer, 42.
Nevertheless, both the Sharp and the Casio recognizes the "order of operation." For example, if you enter the expression (2 +3)2 and then press the equal key, you will again see the "error" message displayed by both calculators. However, if you enter (2 + 3) x 2, you will see the correct answer displayed by both calculators, that is, 10. It is evident that any number or expression enclosed in parentheses as the first entry which is then followed by a number will generate the "error" message.
I just tried entering (2 + 3)2 on the scientific calculator that comes with Windows XP Home edition. When I pressed the enter key, the display remained at "2." This means that the computer did not recognize any "operator" after (2 + 3). If you enter "(" then "2" then "+" then "3" then ")", you see immediately that the result of the operation is 5. Go on and enter "2" and press the equal key, and you see that nothing happens because you did not enter any operator (multiplication) after 5. You are stuck at 2. While the calculator in Windows will not generate an "error" message on the one hand, both the Sharp and Casio will to let you know that you have violated the "syntax" or rules used by either calculator. Remember, a calculator is just a dumb paper weight and it won't do anything for you until you tell it exactly what to do. However, both the Sharp and Casio will perform various calculations for you but will only follow the "syntax" or rules incorporated in their respective designs.
One feature on the Sharp that I really like is the fact that each numeral or expression you enter is displayed in the lower line of the two line display before you enter an operator. This allows you to see and make sure you are entering the correct data. Once you enter the correct data and follow it with some type of operator, the data you entered appears on the upper line of the display area. This allows you to "double check" all entries before you press an operator or equal key. The Casio fx-115MS on the other hand shows all data entered on the upper line first just as you enter it in the calculator.
I like both calculators equally well, and both have their advantages and disadvantages. But the advantages and disadvantages spring mostly from user preference. For me though, the Sharp EL-506VB has the edge because it comes with more thorough and user friendly documentation explaining each function more thoroughly than the Casio fx-115MS. So for five dollars more the Sharp is worth it.
The ... Casio graphing calculator also looks like a good investment and seems to come with a very adequate booklet of about 150 to 200 pages. That will most likely be my next calculator.
[+]
10.0
great calculator for the price
I'm amazed by the features in a $15 calculator. Basically all casual lab calculations I need are handled by this one. Of course it has all of the standard scientific/trig functions, plus a stats mode for mean, std dev, linear regression, etc. What makes it really great is the simultaneous equation solver for 2 or 3 variable linear equations, the quadratic solver, and the cubic (!) solver. Yes, you can solve these analytically pretty easily, but after awhile it gets tedious and you just want the answer.It also lets you enter an equation and solve for any variable without isolating the one you want first, though this is a bit less successful. The numerical integration feature is nice, though the algorithms for these last two aren't as robust as those of the old hp series (eg math error on I(0,1) [sinx/x) dx]). Also does numerical derivatives, fractions and complex numbers, though I have no need for these. The manual is pretty skimpy, but you can't expect much at this price. It's very easy to use and prompts for variables it needs.
In summary, makes a great lab calculator, and any calculations it won't handle are probably best done on a computer anyway.
[+]
10.0
Terrific School Calculator
I bought this calculator from Staples for $14.99 on August 11, 2001. Then, I lost it about a week ago lol. After having it for two years, I'm VERY pleased with it. The look of it is a lot better than the Texas Instruments and all the buttons are in the place that you would put them if you were designing it. The two-line display works great and you can recall up to 8 problems on the calculator. The only drawback is the battery dies out after awhile, but then the solar panel comes in handy. Overall, this calculator is great. Any Casio product I have liked. Since I found this on Amazon I think I'm going to purchase another one as a replacement. I recommend it.
I agree this is an excellent calculator ( along with its pared down sister the 300w ) but there are some disheartening bugs here...
First , like my textbook, it doesn't allow right distribution as follows: enter ( 3) 2 and you get "syntax error" but 2(3) is acceptable.The I conclude this is not "very real" at all because anybody can read both of these = 6. Moreover, the calculator accepts 3(2 = 6 but rejects 3)2=syntax error.
I have also lost serious points when doing chi-square. Be sure to use parentheses or else! Try the following. Enter into Statistical mode. Then perform 10 -5 = 5 ,hit x-squared =25 then hit M+ as your first data point. Then call up the sum of the x= 625. Nasty surprise! In fact if you do any operation like that followed by any power or root, then hit M+ this calculator will repeat the power/root on your data entry. So , either be sure to use parentheses, or hit ANS then = keys before hitting M+ or you are in for a rude awakening. In summary, a really fine piece of workmanship, but watch the bugs!