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HP48GX

This is the HP48GX specifications page for those of you deciding to buy one. The HP48 is a high end programmable calculator, and in my opinion (and not to mention a great number of other people), the best programmable calculator.

It has come a long way, from its introduction in 1990. It started with a 32KB RAM, and a 256KB ROM. Now, it has 128KB (up to 1280KB when expanded internally), and a 512KB ROM.

It originally ran at 2MHz (HP48S/SX), but is now clocked at 4MHz (HP48G/GX). Unfortuenatly, it is hardwired to that clock speed, and cannot be overclocked.

It only has a small 4-BIT (nibble-wide, half a byte) data bus, so some operations are slow. This does not infer that everything runs slow, because most of the programs on it (even User-RPL) run fast.

As some of the more experienced HP48 users have discovered (as well as others tinkering around with it), you can make your own perhiperals and wire them into the HP48's internal bus using the expansion slot. This is what the wireless modem of GS/5 is based upon.




Key features of the HP48GX:

Super-fast 4MHz Saturn CPU
It can zoom graphs in 15 ways
Equation solver and plotter
Built in 'Equation Writer' that shows equations as they are written on paper
Built in 'Matrix Writer' that creates matricies for statistical graphs
It can convert units (LB to KG, for example)
148 unit types built in
It can calculate with 12-digit matissas and 3-digit exponents
Clock can be shown on display, plus appointment alarms can be programmed
Built-in equation library with 315 equations
3D, wire form, and grid map plotting
More than 2300 functions with 117 menus
Demo programs on 21 functions included to teach newbies
Internal clock to keep time and date
Many, many more internet pages dedicated to it than the TI-92
32KB is standard with the 48G, 128KB with the 48GX
9600bps I/O, with Kermit and XModem capabilities
Two way infrared for transferring data with another HP48
2 expansion slots, which can contain either ROM or RAM
Memory can be expanded to 4.75MB, in 128KB sections
3 programming languages preinstalled, User-RPL, System-RPL, and Machine Language
A large and sharp 131x64 LCD display
Up to 11 greyscale shades on the screen
Support for libraries which can expand the built-in command set
And many more features...

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