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Aayush
Aayush Narkhede
• Created on Aug 7, 2025 • 1 • 1 • 2
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Integrated Circuits Used

74LS138 74LS20

Procedure

  1. Add IC 74LS138 into ICBase-1 (74LS138).
  2. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS138).
  3. Connect GND Port to Pin-8 (Ground) of ICBase-1 (74LS138).
  4. Connect Input-14 to Pin-2 (Input) of ICBase-1 (74LS138).
  5. Add IC 74LS20 into ICBase-2 (74LS20).
  6. Connect Pin-1 (Input) of ICBase-2 (74LS20) to Pin-18 (Output) of ICBase-1 (74LS138).
  7. Connect Pin-2 (Input) of ICBase-2 (74LS20) to Pin-17 (Output) of ICBase-1 (74LS138).
  8. Connect Pin-4 (Input) of ICBase-2 (74LS20) to Pin-15 (Output) of ICBase-1 (74LS138).
  9. Connect Pin-5 (Input) of ICBase-2 (74LS20) to Pin-7 (Output) of ICBase-1 (74LS138).
  10. Connect Output-15 to Pin-6 (Output) of ICBase-2 (74LS20).
  11. Connect Pin-19 (Input) of ICBase-2 (74LS20) to Pin-16 (Output) of ICBase-1 (74LS138).
  12. Connect Pin-18 (Input) of ICBase-2 (74LS20) to Pin-14 (Output) of ICBase-1 (74LS138).
  13. Connect Pin-16 (Input) of ICBase-2 (74LS20) to Pin-13 (Output) of ICBase-1 (74LS138).
  14. Connect Pin-15 (Input) of ICBase-2 (74LS20) to Pin-7 (Output) of ICBase-1 (74LS138).
  15. Connect Output-14 to Pin-14 (Output) of ICBase-2 (74LS20).
  16. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS20).
  17. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS20).
  18. Connect Input-11 to Pin-6 (Input) of ICBase-1 (74LS138).
  19. Connect GND Port to Pin-4 (Input) of ICBase-1 (74LS138).
  20. Connect GND Port to Pin-5 (Input) of ICBase-1 (74LS138).
  21. Connect Input-15 to Pin-1 (Input) of ICBase-1 (74LS138).
  22. Connect Input-13 to Pin-3 (Input) of ICBase-1 (74LS138).
  23. Add IC 74LS138 into ICBase-3 (74LS138).
  24. Add IC 74LS20 into ICBase-4 (74LS20).
  25. Add IC 74LS20 into ICBase-5 (74LS20).
  26. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS138).
  27. Connect GND Port to Pin-8 (Ground) of ICBase-3 (74LS138).
  28. Connect Pin-1 (Input) of ICBase-4 (74LS20) to Pin-18 (Output) of ICBase-3 (74LS138).
  29. Connect Pin-2 (Input) of ICBase-4 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS138).
  30. Connect Pin-4 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  31. Connect Pin-5 (Input) of ICBase-4 (74LS20) to Pin-13 (Output) of ICBase-3 (74LS138).
  32. Connect GND Port to Pin-7 (Ground) of ICBase-4 (74LS20).
  33. Connect VCC Port to Pin-20 (VCC) of ICBase-4 (74LS20).
  34. Connect GND Port to Pin-7 (Ground) of ICBase-5 (74LS20).
  35. Connect VCC Port to Pin-20 (VCC) of ICBase-5 (74LS20).
  36. Connect GND Port to Pin-4 (Input) of ICBase-3 (74LS138).
  37. Connect GND Port to Pin-5 (Input) of ICBase-3 (74LS138).
  38. Connect Input-0 to Pin-6 (Input) of ICBase-3 (74LS138).
  39. Connect Input-3 to Pin-2 (Input) of ICBase-3 (74LS138).
  40. Connect Pin-19 (Input) of ICBase-4 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS138).
  41. Connect Pin-18 (Input) of ICBase-4 (74LS20) to Pin-16 (Output) of ICBase-3 (74LS138).
  42. Connect Pin-16 (Input) of ICBase-4 (74LS20) to Pin-15 (Output) of ICBase-3 (74LS138).
  43. Connect Pin-15 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  44. Connect Pin-1 (Input) of ICBase-5 (74LS20) to Pin-15 (Output) of ICBase-3 (74LS138).
  45. Connect Pin-2 (Input) of ICBase-5 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  46. Connect Pin-4 (Input) of ICBase-5 (74LS20) to Pin-13 (Output) of ICBase-3 (74LS138).
  47. Connect Pin-5 (Input) of ICBase-5 (74LS20) to Pin-7 (Output) of ICBase-3 (74LS138).
  48. Connect Output-5 to Pin-14 (Output) of ICBase-4 (74LS20).
  49. Connect Output-4 to Pin-6 (Output) of ICBase-4 (74LS20).
  50. Connect Output-6 to Pin-6 (Output) of ICBase-5 (74LS20).
  51. Connect Input-4 to Pin-3 (Input) of ICBase-3 (74LS138).
  52. Connect Input-2 to Pin-1 (Input) of ICBase-3 (74LS138).