Valentin Albillo's HP Collection

 Welcome to my HP site.  Latest Update #40 still ongoing  (27 new files, 418 pages) 

Since 2019, this ad-free, no-frills web site for my vintage calculator materials (HP, SHARP, etc.), old HP computers and Misc topics (Computer Chess, Fractals) has been possible thanks to Eric Rechlin. It features Articles, Programs, Challenges, Pictures, Brochures, Book Reviews & Covers, Raw Scans and more, all free to download. There's now 1,137 files available and more will be added in the future.
Should you want to comment or ask something, this is the thread to do it.  For past Update announcements, see here.

Click the lovely image to visit my daughter's art homepage

Update #40 highlights: 12 Challenges, 15 Selected Threads (for a list of all new files with links see  Latest Additions  below.)

Project HAM is now at 3,855 pages = 96.38% completed.  See  Introducing Project HAM  (Historic Albillo Materials).

If you'd like to help, please include a link to this Main page into your own site and/or ask other related sites to do so, for increased visibility. It won't mean a cent but will do wonders to encourage me to spend the enormous effort required to prepare and upload more materials. Thanks !

HP Calculators (524 files)

 

     HP Calculator Articles (45 files)

     HP Calculator Programs (43 files)

     HP Calculator Challenges (92 files)

     HP Calculator Pictures (53 files)

     HP Calculator Brochures (54 files)

     HP Calculator Raw Scans (37 files)

     HP Calculator Book Reviews (3 files)

     HP Calculator Book Covers (47 files)

     HP Calculator Selected Threads (117 files)

     HP Calculator Vintage Letters (33 files)

HP Computers (19 files)

 

     HP Computer Programs (3 files)

     HP Computer Brochures (4 files)

     HP Computer Raw Scans (9 files)

     HP Computer Selected Threads (3 files)

Sharp Pocket Computers (116 files)

 

     Sharp Articles (1 files)

     Sharp Programs (9 files)

     Sharp Pictures (32 files)

     Sharp Brochures (9 files)

     Sharp Raw Scans (6 files)

     Sharp Book Reviews (6 files)

     Sharp Book Covers (36 files)

     Sharp Selected Threads (17 files)

Other Brands (83 files)

 

     Other Programs (1 files)

     Other Pictures (10 files)

     Other Brochures (32 files)

     Other Raw Scans (12 files)

     Other Book Covers (28 files)

  

Assorted Miscellaneous (215 files)

 

     Miscellaneous Pictures (187 files)

     Miscellaneous Raw Scans (2 files)

     Chess Book Reviews (6 files)

     Chess Tests (20 files)

Latest Additions

  1. Added HP Challenge VA525 - SRC 014 HP-15C and clones Accurate NxN Determinants in category HP Calculator Challenges
  2. Added HP Challenge VA529 - SRC 017 April 1st 2024 Spring Special in category HP Calculator Challenges
  3. Added HP Challenge VA142 - Happy New Year 2024 and 2023s last teaser in category HP Calculator Challenges
  4. Added HP Challenge VA526 - SRC 015a - HP-15C and clones Big NxN Matrix Inverse Determinant in category HP Calculator Challenges
  5. Added HP Challenge VA527 - SRC 015b HP-15C and clones COMPLEX Matrix Inverse up to 8x8 in category HP Calculator Challenges
  6. Added HP Thread VA103c - Sample problems to evaluate RPL vs RPN objectively in category HP Calculator Selected Threads
  7. Added HP Thread VA103b - RPN or RPL in category HP Calculator Selected Threads
  8. Added HP Thread VA100b - How many stack levels in category HP Calculator Selected Threads
  9. Added HP Thread VA002e - RPN RPL - What in category HP Calculator Selected Threads
  10. Added HP Thread VA600 - Can you calculate Pi using a Solver in category HP Calculator Selected Threads
  11. Added HP Thread VA605 - Estimation quiz in category HP Calculator Selected Threads
  12. Added HP Thread VA610 - Clever fast Mandelbrot - please explain in category HP Calculator Selected Threads
  13. Added HP Thread VA615 - What is the hardest (longest-running) financial calculation in category HP Calculator Selected Threads
  14. Added HP Thread VA620 - Gerson Pi Program in category HP Calculator Selected Threads
  15. Added HP Thread VA625 - An iteration produces all the prime numbers in category HP Calculator Selected Threads
  16. Added HP Thread VA630 - Valentín website update thread Comments and appreciation in category HP Calculator Selected Threads
  17. Added HP Thread VA635 - Comments and discussion on Valentin 4th Then and Now - Area in category HP Calculator Selected Threads
  18. Added HP Thread VA640 - Comments and discussion on Valentin 5th Then and Now - Roots in category HP Calculator Selected Threads
  19. Added HP Thread VA645 - Reflections on Valentin 2023 Pi day special in category HP Calculator Selected Threads
  20. Added HP Thread VA650 - Division vs DIV - Valentin findings in category HP Calculator Selected Threads
  21. Added HP Challenge VA524 - SRC 013 Pi Day 2023 Special in category HP Calculator Challenges
  22. Added HP Challenge VA523 - SRC 012f Then and Now - Angle in category HP Calculator Challenges
  23. Added HP Challenge VA522 - SRC 012e Then and Now - Roots in category HP Calculator Challenges
  24. Added HP Challenge VA521 - SRC 012d Then and Now - Area in category HP Calculator Challenges
  25. Added HP Challenge VA520 - SRC 012c Then and Now - Sum in category HP Calculator Challenges
  26. Added HP Challenge VA519 - SRC 012b Then and Now - Root in category HP Calculator Challenges
  27. Added HP Challenge VA518 - SRC 012a Then and Now - Probability in category HP Calculator Challenges
  28. Added HP Program VA410 - HP-41C Raw Listings (Full Scan) in category HP Calculator Programs
  29. Added HP Letter 1981-06-13 - Letter from Valentin Albillo to Richard Nelson (Full Scan) in category HP Calculator Vintage Letters
  30. Added HP Letter 1981-05-15 - Letter from Valentin Albillo to Richard Nelson (Full Scan) in category HP Calculator Vintage Letters
  31. Added HP Letter 1981-04-10 - Letter from Valentin Albillo to John McGechie (Full Scan) in category HP Calculator Vintage Letters
  32. Added HP Letter 1980-12-12 - Letter from Valentin Albillo to John McGechie (Full Scan) in category HP Calculator Vintage Letters
  33. Added HP Letter 1980-09-01 - Letter from Valentin Albillo to Richard Nelson (Full Scan) in category HP Calculator Vintage Letters
  34. Added HP Challenge VA141 - Introducing APRIL microchallenge in category HP Calculator Challenges
  35. Added HP Challenge VA516 - SRC 010 Pi Day 2022 Special in category HP Calculator Challenges
  36. Added HP Challenge VA517 - SRC 011 April 1st 2022 Bizarro Special in category HP Calculator Challenges
  37. Added HP Brochure VA015 - An Unhurried Look at HP Calculators - Full brochure in category HP Calculator Brochures
  38. Added HP Brochure VA155 - HP Calculators Product Guide - Full brochure in category HP Calculator Brochures
  39. Added HP Brochure VA158 - HP35s Specifications - Full brochure in category HP Calculator Brochures
  40. Added HP Raw Scan - The Story of PPC in category HP Calculator Raw Scans
  41. Added Other Brochure VA094 - Casio PB-100 - Full brochure in category Other Brochures
  42. Added Other Brochure VA092 - Casio FX-702P - Full brochure in category Other Brochures
  43. Added Other Raw Scan - Eight Bit Issue 02 - Tips and Tricks (Full Scan) in category Other Raw Scans
  44. Added HP Raw Scan - HP-67 Programs by Fernando del Rey (Full Scan) in category HP Calculator Raw Scans
  45. Added HP Raw Scan - Once Upon a Pocket in category HP Calculator Raw Scans
  46. Added HP Raw Scan - Prof Computing V1N4 1984 - HP-41 Plotting for your Birthday (Full Scan) in category HP Calculator Raw Scans
  47. Added HP Brochure VA145 - Calculadoras Personales (con precios) - Full brochure in category HP Calculator Brochures
  48. Added HP Brochure VA146 - Calculadoras Personales (sin precios) - Full brochure in category HP Calculator Brochures
  49. Added SHARP Brochure VA000 - Pocket Computer Katalog - Full brochure in category Sharp Brochures
  50. Added SHARP Brochure VA007 - PC-1261 in category Sharp Brochures

COPYRIGHT NOTICE
These articles, programs, pictures, their descriptions and other materials created by me are (c) Valentin Albillo, and can be used freely for non-profit purposes as long as (1) the contents aren't modified in any way and (2) the copyright is acknowledged. In plain words, you can download them and use them for non-profit purposes but do not include them in any media and/or site for which you're asking money, do not tamper with their contents and do not say or imply that you created them or that you don't know who created them, you must always give due credit to me.