3*8decoder

Ritik
Ritik Singh
• Created on Aug 28, 2025 • 0 • 0 • 2
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3*8decoder
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Integrated Circuits Used

74LS04 74LS21

Procedure

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