Fun tangential fact. HP was then one of the main manufacturers of microprocessors. At the time (early 1980s) they had either in prototyping or manufacture at

Fun tangential fact. HP was then one of the main manufacturers of microprocessors. At the time (early 1980s) they had either in prototyping or manufacture at least three distinct lines of microprocessors; none of which they offered to the public, only for sale as part of a product. The Nanoprocessor, [1] [2] which was a very fast and simple 8-bit microcontroller used in a variety of test equipment. The HP Focus, [3] a full 32-bit processor design used in their HP 9000 series. And the Capricorn, [4] a small BCD-oriented processor used in their calculators. By the mid-80s the first PA-RISC designs and HP Saturn would be out, too. Those were also only used inside HP devices, never sold directly for other users. [1] https://www.righto.com/2020/09/inside-hp-nanoprocessor-high-speed.html https://www.righto.com/2020/09/inside-hp-nanoprocessor-high-... [2] https://www.cpushack.com/2020/08/09/the-forgotten-ones-hp-nanoprocessor/ https://www.cpushack.com/2020/08/09/the-forgotten-ones-hp-na... [3] https://en.wikipedia.org/wiki/HP_FOCUS https://en.wikipedia.org/wiki/HP_FOCUS [4] https://en.wikipedia.org/wiki/Capricorn_(microprocessor) https://en.wikipedia.org/wiki/Capricorn_(microprocessor)