this post was submitted on 15 Aug 2025
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
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The HP 49g+/39g+ and their descendants the 50g/39gs run the same operating systems as the older 49g/39g except most of it runs in an emulator so they could replace the old Saturn CPUs with ARM ones. And it still runs way faster than the native version on the older devices somehow.
Plus the entire operating system is written in Reverse Polish Lisp, one of the strangest languages I've ever seen. Very strange devices, but still leagues ahead of any calculator produced since (at least the 49/50, the 39 is very confusing)