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Monisha
Monisha
• Created on Nov 4, 2026 • 0 • 0 • 3
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Integrated Circuits Used

74LS139 74LS20 74LS04

Procedure

  1. Add IC 74LS139 into ICBase-1 (74LS139).
  2. Add IC 74LS20 into ICBase-3 (74LS20).
  3. Connect GND Port to Pin-8 (Ground) of ICBase-1 (74LS139).
  4. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS139).
  5. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS04).
  6. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS04).
  7. Connect GND Port to Pin-7 (Ground) of ICBase-3 (74LS20).
  8. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS20).
  9. Connect Input-13 to Pin-18 (Input) of ICBase-1 (74LS139).
  10. Connect Input-13 to Pin-2 (Input) of ICBase-1 (74LS139).
  11. Connect Input-12 to Pin-17 (Input) of ICBase-1 (74LS139).
  12. Connect Input-12 to Pin-3 (Input) of ICBase-1 (74LS139).
  13. Connect Input-11 to Pin-1 (Input) of ICBase-1 (74LS139).
  14. Add IC 74LS04 into ICBase-2 (74LS04).
  15. Connect Pin-1 (Input) of ICBase-2 (74LS04) to Input-11.
  16. Connect Pin-19 (Input) of ICBase-1 (74LS139) to Pin-2 (Output) of ICBase-2 (74LS04).
  17. Connect Pin-1 (Input) of ICBase-3 (74LS20) to Pin-5 (Output) of ICBase-1 (74LS139).
  18. Connect Pin-2 (Input) of ICBase-3 (74LS20) to Pin-6 (Output) of ICBase-1 (74LS139).
  19. Connect Pin-4 (Input) of ICBase-3 (74LS20) to Pin-16 (Output) of ICBase-1 (74LS139).
  20. Connect Pin-5 (Input) of ICBase-3 (74LS20) to Pin-13 (Output) of ICBase-1 (74LS139).
  21. Connect Output-5 to Pin-6 (Output) of ICBase-3 (74LS20).
  22. Connect Pin-15 (Input) of ICBase-3 (74LS20) to Pin-7 (Output) of ICBase-1 (74LS139).
  23. Connect Pin-16 (Input) of ICBase-3 (74LS20) to Pin-14 (Output) of ICBase-1 (74LS139).
  24. Connect Pin-18 (Input) of ICBase-3 (74LS20) to Pin-7 (Output) of ICBase-1 (74LS139).
  25. Connect Pin-19 (Input) of ICBase-3 (74LS20) to Pin-13 (Output) of ICBase-1 (74LS139).
  26. Connect Output-4 to Pin-14 (Output) of ICBase-3 (74LS20).