HP39G+ Specifications

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, e^x, ^x√y
• y^x, LOG, 10^x, 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