HP HP48GX RPN Expandable Graphic Calculator

Item Name: HP 48GX (128KB) graphing calculator - used. Cosmetic Condition: Good Perfect Working Condition HP 48GX Expandable RPN Graphing Calculator with two expansion card slots This item has been discontinued by the manufacturer. We have a limited number of used calculators available at the price listed on this page; once they are gone we'll likely stop carrying this model. These used units have been verified by us to be in good condition and in working order. Includes cable and batteries. Does not include: Manuals or manufacturer warranty. Returns will not be accepted for this item, but we will repair or replace defective units for an extended period of 60 days.

Hewlett-Packard's HP 48GX is the most powerful calculator in the 48 series, offering the same advanced calculation and programmability features as its siblings, along with expansion options that should appeal to power users and programmers. All this is made possible by the expansion card slot, which lets users expand the built-in memory from 128 KB to a maximum of 1.256 MB or install application software that adds more advanced features to the calculator.

The 48GX is no slouch. Its colorful array of buttons lets users tap into 2,300 built-in functions, 300 of which are built-in formulas and scientific constants that encompass the spectrum of the mathematical and scientific fields. It handles everything from basic algebra equations to advanced trigonometric and statistical calculations. Best of all, if the 48GX doesn't have a feature you desperately need, you can use the built-in object-oriented programming language to create functions from scratch. You can then label your creations and access them as you would any other feature that is integrated with the calculator.

The 48GX uses reverse polish notation (RPN, also called postfix notation), which can be difficult for beginners to grasp, but advanced students and professionals will appreciate RPN's elegance and relative simplicity. An optional connectivity kit lets users connect the device to a PC to download new equations and software, and the integrated infrared port lets you share data with other calculators or output your graphs, plots, or other results to a separately available infrared printer. Typical students may want to opt for a less expensive (and less expandable) calculator in the 48 series, like the 48G+, but for those who demand the best and may need more than 128 KB of memory, the 48GX is the clear choice. --T. Byrl Baker

Pros:

• RPN can speed data entry with practice
• Expansion slot adds extra memory and software options
• Programmable, so you can add nearly any feature you like

Cons:

• Cluttered keypad
• Learning RPN and basic object-oriented programming can be daunting for the uninitiated

Hewlett-Packard's 48GX graphing calculator is designed for the toughest equations from the classroom or lab. Its memory and functions are fully expandable and customizable with plug-in cards and the calculator has a built-in library of over 300 scientific and engineering equations. With object-oriented programming, you can create applications quickly and easily. This model allows you to view, enter, and manipulate arrays, view equations and formulas, and solve for any variable without rewriting your equation. You can even send files between HP 48G/GX calculators. With an optional connectivity kit, you can connect to your Mac or PC.