Best used forEngineering; Computer science; Surveying; Trigonometry; Statistics; Geometry; Biology; Chemistry; PhysicsGraphing functions2-D Function, Polar, Parametric Plot; Differential Equation, Bar Plot; Histogram, Scatter Plot; Find: Intersect, Extremum, Slope, Area; Zoom, Trace, Co-ordinates, ShadeScientific functionsDecimal hrs/hrs min sec conversions; Polar/rectangular conversions; Angle conversions; Base conversions and arithmetic; Unit conversions; Bit, Boolean graphics; Display and printer graphicsStatistical functionsx, x2, y, y2, xy; Sample standard deviation, mean; Population standard deviation; Linear regression; Combinations, permutations; Weighted mean; Edit, save, name, list; Curve fit ( LIN, LOG, EXP, POW ); Plot statistical data; Hypothesis tests; Confidence intervalsMath functions+, -, x, รท, ?, 1/x, +/-, In, ex, x?y; yx, LOG, 10x, x2, %, ? , 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 of functions; Polynomial root finder, Taylor series; Absolute value, round; Integer, & fractional part of a number; Modulo function, floor, ceiling; CAS systemMemory256 MB mDDRFlash memory512 MBPortsUSBProcessor528 MHz (Cortex A7 core)PowerLithium Ion rechargablePower off memory protectionYesAuto power offUser selectable, default 5 minutesDisplay320 x 240 16-bit TColor Touch Screen (10 lines x 33 characters + menus + header)Display typeTFTDimensions (W X D X H)7.13 x 3.38 x .55 inWeight8.04 ozWarrantyLimited 1-year warranty (may vary by region)What's in the boxCalculator; Hard Cover; Quick Start Guide; CD (connectivity software and User Guide); USB cable; USB power supply