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This is a powerful calculator with multiple display and entry formats. Multiple programs can be written and stored, then called upon by a short user given name on a menu. The language is a very twisted, and limited form of BASIC, but certainly functional. Keys don't have a good solid click, like the old TI's had, but are feather touch that takes a second to get used to. The display is multi-line text only. There are no graphing abilities. Don't buy one without a manual - you'll never figure it out, but once you get the feel of it, it eventually becomes natural to you. The cover opens and folds back on itself. I find the finish of the case slippery and difficult to hold onto. Thin enough, but too large to call it pocket sized - this is for the desk or bench, not really for the field. You'll want the manual with you for awhile. Make sure you download a copy of the manual so you have something to refer to after you've misplaced the book months down the road.Read full review
Imagine this calculator as a "fx-991ES PLUS" without unit conversion, of course this one has programming capabilities so you can just add them, thats the only bad thing I can say about this calculator, hard cover, nice buttons, 4 line display, natural text display (equations appear in screen as they are written in your notebook) ENG unit capabilities, 7x7 MAT.... The best calculator for the price, I think this is a little TI-89
To make small programs in a small calculator I like this size and display but the keyboard is confusing. It's a good product but older texas ti 59 does the same, more simple.
Great benefit vs cost.Clean design.Big display. A lot of functions and features inside.I think it should have an interface with PC for easy programming.
I bought it because it was programmable and it looked it worked like the Casio FX-115ES Scientific Calculator. It is easier to do solve and calc then the FX-115ES and has many built in formulas and you can also have user defined formulas. They advertise the FX-5800P as Business/Scientific Calculator. There are no Business Formulas on this calculator. The calculator is great but I don't need another but for those looking for a fast Scientific calculator this is for you. Not sure what tests (SAT etc.) you can use it on.
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