Operating features: Entry Logic: Algebraic/RPN/textbook Menus, prompts Alpha messages Soft-keys Numerical precision: intermediate and internal, 15 digits, exponent -49999 to +49999 Displayed precision: 12 digits, exponent -499 to +499, infinite for integers (limited by memory) Additional applications available on Internet Configuration Flash ROM for future electronic software upgrades RAM 512KB + 2MB flash ROM Redefinable menu keys Redefinable keyboard (user mode) Peripherals Supports libraries/RPL programs Vector operations: rectangular/polar Matrix operations: includes symbolic matrices Matrix editor Graphing Features: 2-D function, polar, parametric plot 3-D, differential equation, bar plot Histogram, scatter plot Find: intersect, extreme, slope, area Zoom, trace, co-ordinates, shade Math Features: +, –, x, ÷, √, 1/x, +/–, In, ex, x√y yx, LOG, 10x, x2, %, π, n! Fractions Degrees, radians or grads mode Trigonometric functions/inverses Hyperbolics/inverses HP Solve application (root finder) Numeric integration Symbolic integration Numeric differentiation Symbolic differentiation Complex number functions Polynomial root finder, Taylor series Absolute value, round Integer & fractional part of a number Module function, floor, ceiling CAS system scientific features Decimal hr/hr min sec conversions Polar/rectangular conversions Angle conversions Base conversions and arithmetic Unit conversions Bit, boolean, graphics Display and printer graphics Built-in equation library Statistical Features: Σ x, Σ x2, Σ y, Σ y2, Σ xy Sample standard deviation, mean Population standard deviation Linear regression Combinations, permutations Weighed mean Edit, save, name, list Curve fit (LIN, LOG, EXP, POW) Plot statistical data Hypothesis tests Confidence intervals Programming Features: Root finder: HP Solve Number of steps/regs or bytes: 1.2MB Number of programs/formulae: ++ Levels of subroutines: ++ Branching Flags: 256 Alpha prompts in programs Input forms, alpha string manipulation Indirect addressing Index looping Alpha listing HP Equation library, over 300 physics equations and graphics Electronic Specifications: CPU: 75 Mhz ARM9 Display size: 131 x 80 pixels Display type: Pixel Memory RAM: 512KB, 2MB Flash ROM IR port: IrDA (limited to 10cm distance) Serial port: USB, RS232 for connections to equipment such as PCs, datalogers, surveying equipment, etc. Expansion port: SD card slot Power supply: AAA x 4 + CR2032Call for Price