HP39G+ CPU 75Mhz ARM9

HP39G+ Display size 131 x 64 pixels 7 lines x 33 characters + 2 lines header + 1 line of menu, LCD Display Type, LCD 131 x 64 pixels dot matrix + indicators, Contrast Adjustable.

HP39G+ System logic: Entry-system logic Algebraic, Built-in functions 600+, Menus, prompts, Internal precision 15 digits.

HP39G+ Memory 200KB user, 256KB total

HP39G+ Connectivity via IR port IrDA, Connectivity USB.

HP39G+ Input with Keyboard Numbers, Letters, Beeper On/off

HP39G+ Power System: AAA x 3 + CR2032, Power off Memory protection, Battery life about 2 months, Auto power off Approximately 5 minutes.

HP39G+ Physical characteristics: Weight 220 grams, 7.7 ounces; Size (L × W × D) 184.0 × 87.0 × 23.5 mm, 7.2 × 3.4 × .09 in

HP39G+ both key top and enclosure were made from hard plastic material.

HP39G+ Subject Suitability: General math, Pre-Algebra/Algebra, Trigonometry, Statistics, Geometry, Biology, Chemistry, Physics, Earth sciences.

Graphing Features

• 2-D Function, Polar, Parametric Plot

• sequence; cobweb, stairstep plot

• plot/table screen, box whisker plot

• Histogram, Scatter Plot

• Find: Intersect, Extremum, 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 (simple cases)

• Numeric differentiation

• Symbolic differentiation (simple cases)

• Complex number of functions

• Polynomial root finder, Taylor series

• Absolute value, round

• Integer, & fractional part of a number

• Modulo function, floor, ceiling

Scientific features

• decimal hrs/hrs min sec conversions

• polar/rectangular conversions

• angle conversions

Statistical Features

• Σx, Σx2, Σy, Σy2, Σxy

• 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 intervals

Programming features

• root finder: HP Solve

• number of steps/regs or bytes: 200KB

• number of Programs/formulae: ++

• levels of subroutines: ++

• branching

• alpha prompts in programs

• input forms, alpha string manipulation

• indirect addressing

• index looping

• alpha listing