Making the most of your HP calculator
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The HP50g was introduced in September 2006 and withdrawn in 2015. It was the final calculator of the HP48 and HP49 series. As a derivative of the HP49G+, the HP50g differed physically in a number of ways: a redesigned case; a better keyboard than the HP49 series (though not quite up to the standard of the original HP48S/SX/G/GX models); a better screen; USB, RS232 and IrDA (IrCOMM) connectivity; support for 2GB SD cards (compared to 1GB cards on the HP49G+), and uses four AAA batteries.
The HP50g also included the full equation library from the HP48G/GX and the periodic table capability that was available as a plug in card for the HP48SX.
Like the HP49G+, the HP50g is based on an ARM processor running a SATURN CPU emulator and like its predecessor it can be programmed in a number of ways: RPL; SystemRPL (using the built-in MASD tool); SATURN assembly language; ARMv4T assembly language. The ability to run native ARM code has allowed the development of a C cross compiler and consequently other languages like LUA have been implemented.
Whilst the HP50g includes RS232 capability, it runs at a slightly different voltage and consequently requires a dedicated cable/adapter in order to operate correctly. The SD card slot supports 2GB cards, however the display of SD card size and the ability to format cards on the calculator is limited to 1GB. IrDA allows HP50g to HP50g transfers without the use of cables or physically swapping SD cards. In common with the HP48 series the IrDA range is limited to about 4 inches in order to prevent transfers across a classroom.
Compared to the later HP Prime, the HP50g supports backward compatibility with many programs, either at source or binary level, from the HP48 and HP49 series.
For PC users, the excellent Emu48 is available from www.hpcalc.org. It allows you to emulate the HP50g, as well as the HP38G, HP39G, HP40G, HP48S, HP48G and HP49 models. You can even pick different skins (KML scripts) for the different machines to suit your PC's screen resolution. Download HP50g specific files from here.
The HP50g is no longer in production. It has been superseded by the HP Prime.
Contact Wlodek to order books. HPCC members can find ordering details and a full book list in the Memberpack.
Note that books about the HP48 are generally relevant to the HP50g as the machines share much underlying software.
hpcalc.org (HP50g Software Archive)
HP50g User Guide
HP50g User Manual
HP50g Advanced User Reference
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