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1. In support of the 33s & 35s (49 Replies)
2. HP-41 Advantage pdf (5 Replies)
3. HP65/67 cpu replacement with a modern pic (1 Reply)
4. HP-41 Card Reader 82104A repair questions (7 Replies)
5. What can a stock 41CX do that a 42S can't? (3 Replies)
6. Repair a classic label (0 Replies)
7. HP-41C screw posts repair (2 Replies)
8. Help with HP-41C Clear Alarms (5 Replies)
9. 41CL self-update via embedded serial port (13 Replies)
10. General info on 48/49/50 ROM entry points (13 Replies)
11. The Four Meanings of "Accurate to 3 Places" (5 Replies)
12. Hp 71b military issue (5 Replies)
13. Which HP models have a MOD function? (6 Replies)
14. Saving the state of HP41 CL to PC (19 Replies)
15. HP41-CL - Module behaves differently than on 41CX (12 Replies)
16. What should I know about the 30B? (7 Replies)
17. How do I load a LIF into EMU71/WIn? (5 Replies)
18. Saturn ASM question (9 Replies)
19. HP-65's Incomplete?! Gamma Function (2 Replies)
20. HP 71B - Ampi Statistics (10 Replies)
21. HP41: Updated RUBIK's / CHESS modules (27 Replies)
22. Bring new life to your HP-98200 Data Cartridges! (5 Replies)
23. A76 button cell recommendations? (5 Replies)
24. Looking for HP-65 Moon Rocket Landing Simulator (#00287A) (3 Replies)
25. A Baghdadian Saying about HP Calculators!!! (5 Replies)
26. Half, Full,No Nuts (3 Replies)
27. HP-41 unit conversions article? (1 Reply)
28. Any RPN, No regs, line given 2 points (8 Replies)
29. Tell me about the HP 67 (25 Replies)
30. HP41Z (6 Replies)