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1. Numerical integration vs. integrals that are zero (14 Replies)
2. Optimized Stack Operations (29 Replies)
3. HP-67 Card Operation Query (2 Replies)
4. A LANGUAGE FOR DIGITAL DESIGN (3 Replies)
5. HP-35s Roll down question (5 Replies)
6. HP22S display compatible replacement (9 Replies)
7. Barcode wand / mass storage for archive 41 (10 Replies)
8. HP25C repair, help needed (42 Replies)
9. HP Classic Calculator (HP-65) back label (14 Replies)
10. HP48GX Newbie Needs Help (25 Replies)
11. (41) program/function label/name ROM pages "path" (2 Replies)
12. [Bug] interesting 'bug' make 39gs crashed ! (0 Replies)
13. Premium bond Ernie takes quantum leap into fifth generation (0 Replies)
14. What does HP-35 Red-Dot back look like? (3 Replies)
15. 9100Bs freshly acquired, weird variations (15 Replies)
16. What is the best BASIC Pocket Computer (120 Replies)
17. Not Secure (1 Reply)
18. Adapting cell battery to HP 41 (17 Replies)
19. HP 45 display malfunction (2 Replies)
20. Integral in solve on HP 42S? (12 Replies)
21. Small Solver Program (24 Replies)
22. HP25 repair - need advice (TESTING POINTS PICTURED) (4 Replies)
23. Geometry Stumper (25 Replies)
24. New Calculator Marketplace (0 Replies)
25. [VA] SRC#004- Fun with Sexagesimal Trigs (18 Replies)
26. Anyone familiar with the "Matters Computational" book? (1 Reply)
27. HP97 The journey begins (40 Replies)
28. HP-65 more on the card reader (90 Replies)
29. Little math problem(s) February 2019 (23 Replies)
30. [VA] SRC#002- Almost integers and other beasties (33 Replies)