Graphical calculator
The Casio FX-9750G is a common sight in any mathematical A level, particularly maths and further maths.
The calculator draws graphs; has boolean algebra capabilities; converts units; integrates; differentiates; cuts through statistics; matrices; basic complex number calculations and is programmable.
There is also a colour version in existence, known as the CFX-9850G. Sacrificing the financial capabilities found on the above model in favour of a tri-colour system, it allows for multiple graphs to be easily distinguished from one another. This model has only half the 64kB memory found on the FX-9750G-Plus, favoured by Mr Reeves. Two LVIth further maths students are currently in possession of such a model, having bought one each at a knock down £25 price at Winfields. They have not yet had trouble with the lack of memory, since neither of them really know how to use it.
