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HP 48gII Graphing Calculator
Back ordered until Jul 30. |
The HP 48gII is Hewlett-Packard's mid-range graphing calculator. It can be considered the "little brother" to the 50g, offering nearly all the same functionality, but with a significantly cheaper price, smaller screen, slower processor, no expandability, different case, and cheaper appearance.
The operating environment of the 48gII should be familiar to anyone who has used the 48GX, but everything performs much better, as it uses the Meta Kernel system introduced in the 49G and runs on a high-speed, modern processor.
While HP targets this calculator at students and professionals alike, it is more powerful than most students will need. In contrast to calculators such as the TI-89, which attempts to provide a "black box" solution to high school and lower-level college math, giving answers that attempt to match standard textbook expectations without giving the student much insight into the process, the HP 48gII gives the user much more control over the calculations, enabling hard problems to be made easier. In this respect, the HP 48gII is much better suited for advanced students and professionals.
The 48gII is a good choice for budget-conscious engineers and advanced students. Users with serious real-world math needs will appreciate the RPL calculating environment, with unlimited depth stack, the extraordinary unit conversion tools, and much more. At the same time, it is an excellent choice for users with a deep interest in mathematics, providing an extremely capable computer algebra system in the palm of the hand.
Although the calculator defaults to a mode that should be familiar to users of the TI-89, it can easily be made to act more like traditional HP calculators by enabling RPN (press [MODE] [+/-] [ENTER] to permanently change to RPN) and switching from choose boxes to softkey menus (set flag -117).
Included Accessories
- Hard plastic slide-on case
- USB cable
- Batteries
- Printed user's manual
- CD with Windows-based connectivity software and PDF of 864-page user's guide
Optional Accessories
Physical Characteristics
- 184 mm by 87 mm by 23.5 mm (7.2" by 3.4" by 0.93")
- 250 g (8.8 oz) with batteries
- Silver painted faceplate with textured gray back
- Hard plastic keys with metal domes for fast and accurate typing
- 7 cm (2.7") display with anti-glare protective cover
Technical Specifications
- 131x64 pixel display with adjustable contrast, showing 7 lines with 22 characters with the default font or 9 lines with 33 characters with the mini font, plus a menu line
- 48 MHz 32-bit ARM920T processor
- 256 KB RAM (estimated 200 KB available to the user)
- 2 MB Flash ROM (not available to the user)
- Four AAA batteries and one CR2032 battery
- Piezoelectric beeper
- Close to 800 built-in commands, performing thousands of functions
- HP part number F2226A (Data Sheet)
Calculating Environments
- RPL-style RPN (Reverse Polish Notation)
- EOS-style algebraic
- Equation Writer (textbook-style input)
- Stack display shows 5 lines by default, but it can be increased to 6 or 7 by shrinking or removing the header
- Header shows current directory path and important settings, and optionally can display a digital or analog clock
Communications
Programmability
- Two built-in programming languages: User RPL, HP Basic
- Compilation and decompilation of code built-in, along with limited debugging support
- Full access to all built-in commands, including all stack operations, branching, testing, graphics, time, input and output
Customizability
- Fully-redefinable keyboard
- Four different font sizes
- Font editing
Applications
- Text editor with copy/cut/paste and find/replace functionality, plus multiple fonts and styles
- Matrix editor displaying five rows and four columns by default
- Equation writer with easy-to-use interface for entering expressions as they would be written on paper (similar to MathCAD)
- Clock with alarms
- Finance (time value of money and amortization)
Graphing
- 2-D Function, Polar, Parametric, Differential Equation, Conic, Truth, Histogram, Bar, Scatter, Slopefield, and multiple 3-D modes
- Determine roots, intersections, slope, area, extrema
- Zoom, trace, find coordinates, and shade plots
- Plot multiple equations simultaneously
- Table of values
Probability and Statistics
- Σx, Σx2, Σy, Σy2, Σxy
- Sample standard deviation, population standard deviation, mean, weighted mean
- Curve fitting (linear, logarithmic, exponential, and power regression)
- Plot statistical data
- Hypothesis tests
- Confidence intervals
- Combinations, permutations, factorials, random number generation
- Upper-tail normal distribution, upper-tail chi-square distribution, upper-tail Snedecor's F-distribution, and upper-tail student's t distribution
Scientific
- Date and time arithmetic
- Decimal hours/degrees to hours/degrees-minutes-seconds conversions
- Rectangular and polar (cylindrical/spherical) conversions
- Angle conversions
- Powerful unit conversions including arithmetic and simplification
- Base conversions including arithmetic and bitwise operations and adjustable word size (decimal, binary, hexadecimal, octal)
- Constants library, with 39 common physical constants
Mathematics
- Advanced Computer Algebra System (CAS)
- Calculus, including numeric and symbolic integration (Risch algorithm) and differentiation, integration by parts, Fourier expansion, Laplace transform
- Differential equations, including solving
- Limits and series, including Taylor expansion, Taylor polynomials, and asymptotic development
- Matrices, including transposition, diagonalization, Hadamard product, Gaussian symbolic quadratic form, reduced-row echelon form, determinant, inverse, eigenvalues, eigenvectors, basis, image, kernel, characteristic polynomial, minimal polynomial, Cholesky factorization, holomorphic operators, the Hessian matrix, Hilbert matrices, and Vandermonde matrices
- Vectors, including absolute value, dot product, cross product, curl, vector potential
- Polynomial operations, including simplification and expansion of expressions, Sturm's sequences, the Horner scheme, Lagrange interpolation, the polygamma function, cyclotomic, Hermite, Legendre, and Tchebycheff polynomials, GCD, LCM, Grœbner basis, and the determinant of Sylvester matrices of polynomials
- Infinite (within memory) precision integer math, including prime number calculation, Chinese remainders, Gaussian integers, Bernoulli numbers, Euler's Φ function
- Trigonometry, including hyperbolic and inverse sine, cosine and tangent, as well as simplification of trigonometric expressions
- Rewrite expressions, including reordering of variables and conversions between trigonometric functions, and rewriting of logarithmic and exponential terms
- Modulo arithmetic
- Solving, including the traditional HP Solve, as well as a symbolic solver, numeric solver, differential equation solver, and simultaneous linear equations solver
- Fractions, including powerful conversions from decimals to fractions in terms of π and radicals, or between proper and improper fractions
- Decimal functions, finding the integer and fractional parts, the floor and ceiling, the mantissa and exponent, the sign, and rounding or truncating to a specified number of decimal places or significant figures
- List processing, performing operations on multiple numbers at once, as well as calculating the sum, product, and differences, and sorting
- Discrete Fourier transform and its inverse
- Complex numbers, both with decimals and infinite precision integers
- Summation
Software Library
- Thousands of third party programs available for download
- Compatible at the binary level with most software written for the 50g/49g+ and virtually all software written for the 49G
- Compatible at the source-code level with most software written for the 48GX/G+/G/SX/S and 28C/S
Standardized Exam Support
- AP Calculus
- AP Statistics
- AP Chemistry
- AP Physics
- SAT Reasoning Test
- SAT Subject Tests in Mathematics Level 1 and Level 2
- PSAT/NMSQT
HP Provided Documentation
Warranty and Support
- 1 year limited warranty in the US, provided by HP America
- Toll-free technical support in the US, at 800-HP-INVENT (800-474-6836)
More Photos
Note: Some of the photos below do not reflect the currently-shipping model, which has both serial and USB ports and uses four batteries.
Part of the HP Calculator Archive,
Copyright 1997-2023 Eric Rechlin.
