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Reviews (7)

20 October 2016
Casio quality
1 of 1 found this helpful Bought the fx-991EX to replace a very aging fx-5000F. As a programmer and hardware engineer the BASE-N calculation mode is important. Many Casio calculators don't have the mixed base feature of the fx-5000F, but the fx-991EX has it. Additionally the binary display mode is very helpful - spaces between nibbles to make bit identification easier.
The display is crisp and clear, though I'm not a huge fan of the font used (would have preferred a sans-serif legacy calculator style, or a choice!).
There's a good set of constants that are grouped into logical sets, plus conversion of standard units - that's all very helpful.
Casio provide the user manual online - definitely worth checking out what's available. But for just a little more than the usual fx-83 + lower fx-991 series calculators this is very good value.

25 June 2025
Such a small and silent blood pressure m...
Such a small and silent blood pressure monitor. Very portable and discrete - easier than the armband types. Thank you!

06 December 2018
The cable Apple should be supplying
I’ve tried countless lightning cables and these UNBREAKCable from SyncWire are by far the most rugged and reliable.
Buying more of these to save the hassles in the family!