Traffic lights - Copy

zaid
zaid khan
• Created on Sep 11, 2025 • 0 • 0 • 3
Edit Circuit Copy Circuit Try Yourself
Traffic lights - Copy
100%

Integrated Circuits Used

74LS90 74LS20 74LS08

Procedure

  1. Add IC 74LS90 into ICBase-3 (74LS90).
  2. Connect VCC Port to Pin-5 (VCC) of ICBase-3 (74LS90).
  3. Connect GND Port to Pin-16 (Ground) of ICBase-3 (74LS90).
  4. Connect Manual clock Port to Pin-20 (Input) of ICBase-3 (74LS90).
  5. Connect Manual clock Port to Pin-1 (Input) of ICBase-3 (74LS90).
  6. Connect GND Port to Pin-2 (Input) of ICBase-3 (74LS90).
  7. Connect GND Port to Pin-3 (Input) of ICBase-3 (74LS90).
  8. Connect GND Port to Pin-6 (Input) of ICBase-3 (74LS90).
  9. Connect GND Port to Pin-7 (Input) of ICBase-3 (74LS90).
  10. Connect VCC Port to Pin-20 (VCC) of ICBase-4 (74LS20).
  11. Connect GND Port to Pin-7 (Ground) of ICBase-4 (74LS20).
  12. Add IC 74LS20 into ICBase-4 (74LS20).
  13. Add IC 74LS08 into ICBase-5 (74LS08).
  14. Connect Pin-4 (Input) of ICBase-4 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS90).
  15. Connect Pin-2 (Input) of ICBase-5 (74LS08) to Pin-6 (Output) of ICBase-4 (74LS20).
  16. Connect Pin-1 (Input) of ICBase-5 (74LS08) to Pin-18 (Output) of ICBase-3 (74LS90).
  17. Connect Output-0 to Pin-3 (Output) of ICBase-5 (74LS08).
  18. Connect VCC Port to Pin-20 (VCC) of ICBase-5 (74LS08).
  19. Connect GND Port to Pin-7 (Ground) of ICBase-5 (74LS08).
  20. Connect Pin-4 (Input) of ICBase-5 (74LS08) to Pin-15 (Output) of ICBase-3 (74LS90).
  21. Connect Pin-2 (Input) of ICBase-4 (74LS20) to Pin-15 (Output) of ICBase-3 (74LS90).
  22. Connect Pin-1 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS90).
  23. Connect Pin-15 (Input) of ICBase-4 (74LS20) to Pin-18 (Output) of ICBase-3 (74LS90).
  24. Connect Pin-16 (Input) of ICBase-4 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS90).
  25. Connect Pin-18 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS90).
  26. Connect Pin-5 (Input) of ICBase-5 (74LS08) to Pin-14 (Output) of ICBase-4 (74LS20).
  27. Connect Output-1 to Pin-6 (Output) of ICBase-5 (74LS08).
  28. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS20).
  29. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS20).
  30. Add IC 74LS20 into ICBase-2 (74LS20).
  31. Connect Pin-15 (Input) of ICBase-5 (74LS08) to Pin-14 (Output) of ICBase-3 (74LS90).
  32. Connect Pin-1 (Input) of ICBase-2 (74LS20) to Pin-18 (Output) of ICBase-3 (74LS90).
  33. Connect Pin-2 (Input) of ICBase-2 (74LS20) to Pin-16 (Ground) of ICBase-3 (74LS90).
  34. Connect Pin-4 (Input) of ICBase-2 (74LS20) to Pin-15 (Output) of ICBase-3 (74LS90).
  35. Connect Pin-16 (Input) of ICBase-5 (74LS08) to Pin-6 (Output) of ICBase-2 (74LS20).
  36. Connect Output-2 to Pin-14 (Output) of ICBase-5 (74LS08).
  37. Connect Input-0 to Pin-5 (Input) of ICBase-4 (74LS20).
  38. Connect Input-1 to Pin-19 (Input) of ICBase-4 (74LS20).
  39. Connect Input-2 to Pin-5 (Input) of ICBase-2 (74LS20).