decoder(3x8)

Sampada
Sampada Yanpallewar
• Created on Aug 29, 2025 • 0 • 0 • 2
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decoder(3x8)
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Integrated Circuits Used

74LS21 74LS04

Procedure

  1. Add IC 74LS21 into ICBase-1 (74LS21).
  2. Add IC 74LS21 into ICBase-2 (74LS21).
  3. Add IC 74LS21 into ICBase-3 (74LS21).
  4. Add IC 74LS04 into ICBase-4 (74LS04).
  5. Connect Pin-1 (Input) of ICBase-1 (74LS21) to Input-15.
  6. Connect Pin-1 (Input) of ICBase-4 (74LS04) to Input-14.
  7. Connect Pin-2 (Input) of ICBase-1 (74LS21) to Pin-2 (Output) of ICBase-4 (74LS04).
  8. Connect Pin-3 (Input) of ICBase-4 (74LS04) to Input-13.
  9. Connect Pin-4 (Input) of ICBase-1 (74LS21) to Pin-4 (Output) of ICBase-4 (74LS04).
  10. Connect Pin-5 (Input) of ICBase-4 (74LS04) to Input-12.
  11. Connect Pin-5 (Input) of ICBase-1 (74LS21) to Pin-6 (Output) of ICBase-4 (74LS04).
  12. Connect Output-8 to Pin-6 (Output) of ICBase-1 (74LS21).
  13. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS21).
  14. Connect Output-9 to Pin-14 (Output) of ICBase-1 (74LS21).
  15. Connect Pin-19 (Input) of ICBase-1 (74LS21) to Input-15.
  16. Connect Pin-18 (Input) of ICBase-1 (74LS21) to Input-12.
  17. Connect Pin-16 (Input) of ICBase-1 (74LS21) to Pin-2 (Output) of ICBase-4 (74LS04).
  18. Connect Pin-15 (Input) of ICBase-1 (74LS21) to Pin-4 (Output) of ICBase-4 (74LS04).
  19. Connect GND Port to Pin-7 (Ground) of ICBase-1 (74LS21).
  20. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS21).
  21. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS21).
  22. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS21).
  23. Connect GND Port to Pin-7 (Ground) of ICBase-3 (74LS21).
  24. Connect Pin-1 (Input) of ICBase-2 (74LS21) to Input-15.
  25. Connect Pin-2 (Input) of ICBase-2 (74LS21) to Pin-2 (Output) of ICBase-4 (74LS04).
  26. Connect Input-13 to Pin-4 (Input) of ICBase-2 (74LS21).
  27. Connect Pin-5 (Input) of ICBase-2 (74LS21) to Pin-6 (Output) of ICBase-4 (74LS04).
  28. Connect Output-10 to Pin-6 (Output) of ICBase-2 (74LS21).
  29. Connect Pin-19 (Input) of ICBase-2 (74LS21) to Input-15.
  30. Connect Pin-18 (Input) of ICBase-2 (74LS21) to Input-13.
  31. Connect Pin-16 (Input) of ICBase-2 (74LS21) to Input-12.
  32. Connect Pin-15 (Input) of ICBase-2 (74LS21) to Pin-2 (Output) of ICBase-4 (74LS04).
  33. Connect Output-11 to Pin-14 (Output) of ICBase-2 (74LS21).
  34. Connect Pin-1 (Input) of ICBase-3 (74LS21) to Input-15.
  35. Connect Pin-2 (Input) of ICBase-3 (74LS21) to Input-14.
  36. Connect Pin-4 (Input) of ICBase-3 (74LS21) to Pin-4 (Output) of ICBase-4 (74LS04).
  37. Connect Pin-5 (Input) of ICBase-3 (74LS21) to Pin-6 (Output) of ICBase-4 (74LS04).
  38. Connect Output-12 to Pin-6 (Output) of ICBase-3 (74LS21).
  39. Connect Pin-19 (Input) of ICBase-3 (74LS21) to Input-15.
  40. Connect Pin-18 (Input) of ICBase-3 (74LS21) to Input-14.
  41. Connect Pin-16 (Input) of ICBase-3 (74LS21) to Input-12.
  42. Connect Pin-15 (Input) of ICBase-3 (74LS21) to Pin-4 (Output) of ICBase-4 (74LS04).
  43. Connect Output-13 to Pin-14 (Output) of ICBase-3 (74LS21).
  44. Add IC 74LS21 into ICBase-5 (74LS21).
  45. Connect VCC Port to Pin-20 (VCC) of ICBase-4 (74LS04).
  46. Connect GND Port to Pin-7 (Ground) of ICBase-4 (74LS04).
  47. Connect VCC Port to Pin-20 (VCC) of ICBase-5 (74LS21).
  48. Connect GND Port to Pin-7 (Ground) of ICBase-5 (74LS21).
  49. Connect Pin-1 (Input) of ICBase-5 (74LS21) to Input-15.
  50. Connect Input-14 to Pin-2 (Input) of ICBase-5 (74LS21).
  51. Connect Pin-4 (Input) of ICBase-5 (74LS21) to Input-13.
  52. Connect Pin-5 (Input) of ICBase-5 (74LS21) to Pin-6 (Output) of ICBase-4 (74LS04).
  53. Connect Output-14 to Pin-6 (Output) of ICBase-5 (74LS21).
  54. Connect Input-15 to Pin-19 (Input) of ICBase-5 (74LS21).
  55. Connect Pin-18 (Input) of ICBase-5 (74LS21) to Input-14.
  56. Connect Input-13 to Pin-16 (Input) of ICBase-5 (74LS21).
  57. Connect Input-12 to Pin-15 (Input) of ICBase-5 (74LS21).
  58. Connect Output-15 to Pin-14 (Output) of ICBase-5 (74LS21).