| HP49 Calculator |
TI-89 Calculator |
| 1.5 MB of memory (512 KB RAM and 1 MB Flash ROM for data storage). |
About 188K bytes of user-available RAM. About 702K bytes of user-available FLASH ROM for user data archive and/or Handheld. |
| 3 |
Electronic upgradability of operating system including maintenance and feature upgrades. |
| 4 |
Applications available from TI and other leading developers. |
| 5 |
Advanced Mathematics Software functionality suitable for college mathematics and engineering coursework. |
| RPN, assembly, and HP basic entry system logic. The HP 49g's Computer Algebra System (CAS) offers both dynamic symbolic manipulation and symbolic and numeric solving. The 49g also offers a CAS step-by-step mode for dynamic derivation, integration, and linear-algebraic problem solving, which displays all the steps and results in textbook mode. |
Pretty Print shows equations and results with radical notation, stacked fractions, and superscript exponents. |
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Active Calculator Home history screen can hold up to 99 previous entries for deep recall. |
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Real and complex numeric results. |
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Symbolic manipulation for algebra, calculus and differential equations. |
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Symbolic units for use in equations, computations, and unit conversions. Over 100 units in 28 unit categories. 20 constants with symbolic units. |
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Graphs functions, parametric and polar equations, recursively-defined sequences, 3-dimensional surfaces, and differential equations. Up to 99 graphing equations defined and saved for each graphing mode. |
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Numeric evaluation of functions in tables and data variable format. |
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Interactive analysis of function values, roots, maximums, minimums, integrals, derivatives, intersections, inflection points, and arc lengths. |
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Recursively-defined sequences access any number of previous terms. |
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Slope and direction fields for exploring differential equations. RK and Euler numeric differential equation solving methods. |
| The HP 49g offers 15 plot types including function, parametric, polar, conic, differential, wireframe, and statistical plots. Other graphing features include: real time rotation, function analysis, 2D/3D plotting with tracing and zooming capabilities. |
Real time rotation of 3D surfaces. |
| The HP 49g performs hypothesis tests and measures confidence intervals that relate to a population. It allows inputting, viewing, and editing sample data in table format similar to a computer spreadsheet or table and plots the results. |
List-based one- and two-variable statistical analysis, including eight regression models. |
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Statistics plots including scatter, xy-line, box and modified box plots. Histograms and regression lines. |
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Matrix operations including inverse, determinant, transpose, augment, elementary row operations, and reduced row echelon form. Matrix elements can be real or complex and numeric or symbolic. |
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Advanced matrix operations including eigenvalues, eigenvectors, LU and QR decompositions. |
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Column-logic expressions in data/matrix editor are retained for automatic recalculation when values change. |
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Interactive numeric equation solver. |
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Hexadecimal and binary operations and conversions. |
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Extensive programming capability with number and size of programs limited only by available memory. User-definable functions extend built-in functionality. |
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Optional assembly language programming. |
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Command catalog screen to access and show "help" information for each function and command. |
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Memory management to create folders for specific applications or subjects. |
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255 symbols in the character set including Greek, system, and international characters. |
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Compatible with Calculator-Based Laboratory™ (CBL2™) and Calculator-Based Ranger™ (CBR™) Systems to allow analysis of real-world data. |
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Link capabilities for data transfer through I/O port. |
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TI-GRAPH LINK™ accessory allows information to be transferred to a computer and printed or stored on disk. |
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Unit-to-unit link cable included. |
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ViewScreen™ overhead unit available. |
| 3 x AAA Batteries |
Powered by 4 AAA batteries with lithium battery backup to protect memory during main battery change. |
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TI-89 doesn't have the Geometry feature, only available via an App. |
| One-year limited warranty. |
One-year limited warranty. |
