Got my hands on a HP-48GX

A co-worker discovered my interest for HP calculators and remembered he had some kind of graphing calculator while at engineering shool. Belived it was some kind of a TI model. Turned out he had a HP-48GX collecting dust home!

To cut a short story shorter, he has kindly borrowed me the machine. Later this year I will get my self a HP-50g and this will allow me to learn the RPL language up front!

I may do a RPL port of the HP-35s Euclid Pack implementation...

Resources related to getting to know the RPL series of machines:

Manuals downloadable from Educalc.net here.
HP 48G Series Advanced User's Reference Manual available here at hpcalc.org.
Short but good introduction to RPL at the museum.
UserRPL stack commands, article at the museum.
The usenet group ofcourse.
FAQs found at the Internet FAQ Archieves.

A HP-35s hacker

Stefan is a HP calculator enthusiast that got himself a HP-35s and have a done a man's work providing two (so fare) rather lengthy programs for Curve Fitting and Matrix Operations on the HP-35s.

Mind you, as this thread (about Stefan's matrix program) at the MoHPC forum shows: If you need to do serious matrix work, clearly you should consider a RPL machine.

By the way, do check out Stefan web content, he is an inspiration to any kind of web author and also he turns out to be a norgesvenn!

HP Calculator links

The Museum of HP Calculators (MoHPC)

I would say the most important HP calculator site, a virtual museum of vintage HP calculators from the HP-9100s to the HP-48s. Beside presentations of the machines here is a *lot* of information on programming, collecting and more... What nails this as the HP calculator site is the forum. It seems to be the Rick's cafe for HP calculator crowd. Hanging out here and explore it's archive may be the best way to discover the HP calculator online universe.

FixThatCalc

The place that give me hopes my old pal the HP-41CV and me once again will hack together.

Speaking about the HP-41...

Fantastic scan of HP-41's user's manual and card reader manual by this site.

HP-41 machines flew on the early space shuttle missions, here is an article from the Smithsonian Institution's National Air and Space Museum web site about it.

However it must be mention that the HP-41C was not the first hp calculator to go to space, as told by this old HP press release the HP-35 (first scientific handheld calculator) and HP-65 (first magnetic card-programmable handheld calculator) had been there before: A museum visitor's picture and a cool picture from a HP poster.