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HHC 2025 USB Drive US$170

This is the official 512 GB USB drive associated with the HHC 2025 conference. This drive is comprehensive and contains everything that was on past conference drives as well.

Note that because of the HHC 2026 conference, if you order a drive now, your drive won't ship until November 2026, and will be updated with the 2026 materials.

Most of the contents of the drive is available for free download (linked below), but this compiles it all into one convenient place. This drive is full of goodies of interest to HP calculator enthusiasts, with about 395 GB of data from over a million files.

For each drive sold, $25 goes to support future HHC conferences. Most of the rest goes to purchasing the drive itself.

Contents

• HP calculator emulators, including Emu48, Emu28, Emu42, Nonpareil, the Teenix emulators, and the official HP emulators
• All issues of the HP Solve publication, from the torrent
• Complete contents of the hp41.org site, from the torrent and updated with recent changes through September 22, 2025
• Complete contents of this hpcalc.org site, from the torrent, updated through September 21, 2025
• Historic version of this hpcalc.org site from 1997
• All HP Learning Modules, produced for various calculators
• Large selection of manuals for calculators, both ones released digitally by HP and also ones scanned by members of the community, including the contents of Katie Wasserman's site and all the manuals from my manuals site as of October 21, 2025
• Complete mirror, including all of the file downloads, from the Australian HP Computer Museum
• Mirrors of Glenn Robb's HP Archive, Vassilis Prevelakis's series80.org, and J-F Garnier's Jeff's Calc Page
• All file downloads from the groups.io groups for the HP-75 and HP Series 80
• Complete archives of various calculator discussion forums, including comp.sys.hp48, comp.sys.handhelds, and the ND university system listserv
• Full collection of all available posts and attachments made to the various HP Museum forums, current through September 1, 2025
• Archived versions of hp42s.com, jacques-laporte.org, greendyk.nl, and albillo.hpcalc.org from archived.hpcalc.org
• Offline-browseable versions of dozens of other smaller HP calculator-related sites, such as Carlos Marangon's Area48, Marc Mislanghe's HP Memory Project, Kenneth Kuhn's Online Museum and Technical History of The Hewlett-Packard Company, Rick Bensene's The Old Calculator Museum, Rick Full's VCALC.net, Bruce Bergman's Wiki4HP, and more.
• Selection of high-resolution photos of HP calculators, from the HP press photos torrent and also this site
• PPC Archive 2.47, dated April 1, 2025, compiled by Jake Schwartz, including 65 Notes, PC Calculator Journal, PPC Journal, PPC ROM Manual, Computer Journal of PPC, CHHU Chronicle, HPX Exchange, HP65 Key Note, HP Key Notes, HP Journal Articles, HPCC Datafile (1982-2024), Australian newsletters and conference proceedings, and the EduCALC catalog library
• PPC Notes, from rskey.org
• PPX Exchange, from rskey.org
• Scans of over 1500 ads for calculators
• Scans of various other calculator-related periodicals, including L'Ordinateur de poche, La Gazette des Pockéticaires, and more
• Hundreds of high-resolution images related to HP calculators, mostly from the HP Photos torrent and the HP Slides torrent
• HP calculator schematics from the HPCC CD-ROM, drawn by Tony Duell
• Historic HP calculator ROMs, taken from elsewhere on this site
• Broad selection of calculator-related fonts
• Presentation files from the talks given at HHC 2025, as well as many earlier HHC conferences
• Video recordings of the live-streamed HPCC 2020 conference and HPCC January 2021, October 2021, and January 2024 mini-conferences and videos recorded by Eric Rechlin of the talks presented at the HHC 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021, 2022, 2023, 2024, and 2025 conferences, as well as the HPCC 2022 conference and Allschwil 2022 meeting, along with recordings made by others of the Allschwil 2016 and 2018 conferences and the HPCC 2023, HPCC 2024, and HPCC 2025 conferences and the Stuttgart 2024 conference, plus some other calculator-related videos
• Even more -- view my presentations on YouTube for more details

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