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Old HP Forum Archives

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  1. HP-50G CASE FIT (3 Replies)
  2. Can anyone check this strange behavior on HP-15C (4 Replies)
  3. HP 50g (1 Reply)
  4. Double Extended memory module HP41cx.. (11 Replies)
  5. Small cover over toggle keys 41 blanknut (5 Replies)
  6. How to write HP-9121 floppies from a PC ? (4 Replies)
  7. 50G Keys hard? (4 Replies)
  8. Broken HP-25 (4 Replies)
  9. HP User Contributed Programs (0 Replies)
  10. Happy Pi Day (2 Replies)
  11. Nonpareil for OS/X (6 Replies)
  12. CORDIC Trigonometric Algorithm on an HP17BII (4 Replies)
  13. Where to buy HP calcs in 1974 (45 Replies)
  14. Ulam's Spiral on HP 17bII+ (25 Replies)
  15. HP-25 first production dates & quantities (0 Replies)
  16. My first programable HP (18 Replies)
  17. Sudden death of HP33S batteries (1 Reply)
  18. 11c questions (8 Replies)
  19. PROGRAM DISPLAY QUESTIONS (6 Replies)
  20. OT: iPhone SDK (7 Replies)
  21. HP-10C emulator ? (9 Replies)
  22. New Article: HP 41C Service/ Diagnostic ROM Versions (2 Replies)
  23. Texas Instruments - The PET Project (4 Replies)
  24. HP 50g finding the nth derivative (3 Replies)
  25. HP 41C Display Window Adhesive (0 Replies)
  26. 50th birthday ! (38 Replies)
  27. Silver 17BII+ - General remarks and a solver example (10 Replies)
  28. HP71b - Forth Modul (2 Replies)
  29. HP 15C Self-Test Question (12 Replies)
  30. CLASSIC RPN Calculator Simulators - Updated (Again) (0 Replies)
  31. HP 48S Schematic ? (1 Reply)
  32. New (to me!) HP-25 (6 Replies)
  33. HP-71B FORTH/Assembler?? (2 Replies)
  34. Looking for William Doug Wilder (7 Replies)
  35. Magiclik question (4 Replies)
  36. Default "Beep" pitch in HP 49/50 (0 Replies)
  37. Free calculators, what to do with them? (4 Replies)
  38. HP 35S teardown with video (8 Replies)
  39. hp-9121 floppy disk repair help needed (5 Replies)
  40. How do you feel about the 50g? (42 Replies)
  41. HHP 96k module configuration (HP-71B) (1 Reply)
  42. HP-41C Display Window Replacement (2 Replies)
  43. 50g, Trig Identities Gone Wild (4 Replies)
  44. No luck with HP41CV's (6 Replies)
  45. [OT?] Mini-challenge (28 Replies)
  46. Where to find the little red rocker switch for Speed up in HP41 (3 Replies)
  47. HP48s won't turn on (11 Replies)
  48. Any separate manual for the Mainframe Labels Rom? (10 Replies)
  49. OT: Looking for a person who uploaded HP-41E and TI-57E to www.hpcalc.org (2 Replies)
  50. hp9815a repair (3 Replies)
  51. What's the going rate for a 15C? (4 Replies)
  52. A compiler for HP-11C (6 Replies)
  53. OT: Great Texas TI 58/59 Compiler. (4 Replies)
  54. 41C to 50g Migration (6 Replies)
  55. HP17BII+ - Help with writing Solve Equations...! (7 Replies)
  56. HEPAX (NoV-32) reproducible error (13 Replies)
  57. Picture of silver 17bii+ (14 Replies)
  58. Plea for HP-41 User Contributed Programs (11 Replies)
  59. 48SX cards in 48GX (26 Replies)
  60. Solving for an Integral: 28S solution (2 Replies)
  61. HP seven-segment display patent (0 Replies)
  62. HP Calculator History (6 Replies)
  63. sticking key HP11C (4 Replies)
  64. wrinkled HP program card wallets (3 Replies)
  65. [OT] I'm a Daddy! (12 Replies)
  66. HP 42s display (6 Replies)
  67. Super News from Randy Sloyer (0 Replies)
  68. Number representation (5 Replies)
  69. HP 9100B magnetic card (2 Replies)
  70. Battery Pack for HP 21 (5 Replies)
  71. HP 50 Descriptive Article (2 Replies)
  72. Misbehaving 42s Multirow Menu Annunciator? (4 Replies)
  73. Advantage Rom Module (Prototype version) (10 Replies)
  74. HP 50g won't turn on (6 Replies)
  75. mini-challenge (9 Replies)
  76. Valentine's Day 2008 Mini-Challenge ! (37 Replies)
  77. EMS ROM doesn't work on HP-85A (note for PRM-85 owners) (0 Replies)
  78. HP67/97 RND Function (8 Replies)
  79. How HP Got Its First Calculators: Video Interview with Tom Osborne (15 Replies)
  80. Hewlett Packard HP 82164A HP-IL / RS-232C and 71b (4 Replies)
  81. 41CX fixed by fixthatcalc (8 Replies)
  82. HP 48 Mac Serial Cable (4 Replies)
  83. Book question??? (2 Replies)
  84. HP-41CX MCODE Stack Functions (12 Replies)
  85. Connectivity Issues Continued (2 Replies)
  86. NovRAM/NoV-32 experiences (MLDL2000 users: also for you) (13 Replies)
  87. Proposed rule regarding ebay discussions (16 Replies)
  88. What is the "best" way to control the #thing#? (5 Replies)
  89. MICRO SD CARDS IN HP 50G?? (10 Replies)
  90. what I did...what do you think? (6 Replies)
  91. NOS Mini Data Cassettes? (13 Replies)
  92. HHC Conference mailing list (0 Replies)
  93. Windows 1.03 for Vectra valid for HP-150 ? (10 Replies)
  94. Elektronika MK-152 (17 Replies)
  95. Technolust? (13 Replies)
  96. eBay strike survey (37 Replies)
  97. HP19C printer needs service (4 Replies)
  98. Quote "May a Calculator bring you great Happiness" (4 Replies)
  99. Using Custom (vectored) ENTER (2 Replies)
  100. survey (26 Replies)