The main ui attraction is the, so called, natural textbook display. this is the ability of the machine to draw out a calculation formula in a mathematically written way. this is rather nice for a budget calculator and it manages to size-up square root signs, fractions and brackets accordingly to fit around sub-expressions. this is a nice touch and you can turn it off if you prefer into, so called, line mode which might be more useful when you want to fit the most on the screen. there are also a whole swathe of annunciators and the obligatory four-way navigator. Physically, the unit is slim and pocket sized. housed in the now standard reversible hard-cover case that stows onto the back of the calculator when in use and to offer desk stability (there are no footpads, only plastic dimples). additionally, the cover hosts the symbols and codes for the built-in unit conversions and physical constants. the front face is rather smartly designed with the silver metal effect plastic and clearly written, colour coded functions. casio have clearly got budget calculator buttons such as these buttons feel quite good for the price bracket and certainly acceptable. Superficially, the feature set is vast, with the box claiming an outstanding 403 functions. inside, there is a fanfold user manual and appendix manual. other papers are the same in different languages. a quick summary of functions include; regular Scientifics, fractions, unit conversions, physical constants, number bases, complex numbers, matrices, statistics, vector math, equation solving, numerical integration and differentiation. that's quite a lot! Features Overview: 403 functions Display: "Natural Textbook Display" LCD (Dot-Matrix), 31 x 96 dots, 10 + 2 digits Energy supply: two way power Comes with new slide-on hardcase dimensions (H x B x D): 161,0 x 80,0 x 12,2 mm weight: 104 g Functions & general informationDetailed specificationsMulti Reply 24 Parentheses level Variable memory (7) STO/RCL-key Basic Scientific FunctionsTrigonometric and inverse trigonometric functions Hyperbolic and invers hyperbolic functions x2/ xy / x√ - (Power / Power Root) calculations logarithmic calculations (log, ln) 10x, ex - (exponential) calculations √ - (root) calculations x-1 - (invers) calculations Combinatoric and Permutation Random Number Run# Conversion of polar coordinates into rectangular coordinates and invers Fraction (two modes) Conversion of hexadesimal into decimal and inverse Calculates in Degree, Grad and Radian Π-key, e-key and %-key SCI/FIX/ENG function Statistics: List based statistics 1-variable statistics Standard deviation 2-variable statistics (Regressions) Linear Exponential abExponential Logarithmic Power Invers Quadratic Solve/Calc Numeric integration calculation Numeric differential calculation ∑() - function complex number calculation a+bi/ rÐq Base-n calculation Logical calculation Equation Simultaneous equation Polynomial equation Matrix Determinant Inverse matrix Transposed matrix Vector Inner product Outer product Physical constant Metric conversion Natural Input Fraction Root Power Parentheses Absolute number Numerical differentation/integration Sum Non-natural input (such as the MS models) Output with √ form Output with π form Function table | 
