Mod -N counter using IC-7490 - Copy

Ishwari Anchawale
Ishwari Anchawale
• Created on Apr 21, 2026 • 0 • 0 • 3
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Mod -N counter using IC-7490 - Copy
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Integrated Circuits Used

74LS90 74LS08 74LS32

Procedure

  1. Add IC 74LS90 into ICBase-1 (74LS90).
  2. Connect VCC Port to Pin-5 (VCC) of ICBase-1 (74LS90).
  3. Connect GND Port to Pin-16 (Ground) of ICBase-1 (74LS90).
  4. Connect Output-1 to Pin-18 (Output) of ICBase-1 (74LS90).
  5. Connect Output-2 to Pin-15 (Output) of ICBase-1 (74LS90).
  6. Connect Output-3 to Pin-14 (Output) of ICBase-1 (74LS90).
  7. Connect Output-4 to Pin-17 (Output) of ICBase-1 (74LS90).
  8. Add IC 74LS08 into ICBase-2 (74LS08).
  9. Connect Pin-1 (Input) of ICBase-2 (74LS08) to Pin-18 (Output) of ICBase-1 (74LS90).
  10. Connect Pin-2 (Input) of ICBase-2 (74LS08) to Pin-15 (Output) of ICBase-1 (74LS90).
  11. Connect Pin-4 (Input) of ICBase-2 (74LS08) to Pin-3 (Output) of ICBase-2 (74LS08).
  12. Connect Pin-5 (Input) of ICBase-2 (74LS08) to Pin-14 (Output) of ICBase-1 (74LS90).
  13. Add IC 74LS32 into ICBase-3 (74LS32).
  14. Connect Pin-1 (Input) of ICBase-3 (74LS32) to Pin-6 (Output) of ICBase-2 (74LS08).
  15. Connect Pin-2 (Input) of ICBase-3 (74LS32) to Pin-17 (Output) of ICBase-1 (74LS90).
  16. Connect GND Port to Pin-7 (Ground) of ICBase-3 (74LS32).
  17. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS08).
  18. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS08).
  19. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS32).
  20. Connect Pin-2 (Input) of ICBase-1 (74LS90) to Pin-3 (Output) of ICBase-3 (74LS32).
  21. Connect Pin-3 (Output) of ICBase-3 (74LS32) to Pin-3 (Input) of ICBase-1 (74LS90).
  22. Connect Clock port of 1Hz frequency to Pin-20 (Input) of ICBase-1 (74LS90).
  23. Connect Pin-1 (Input) of ICBase-1 (74LS90) to Pin-18 (Output) of ICBase-1 (74LS90).
  24. Connect Seven segment display 2 to Pin-17 (Output) of ICBase-1 (74LS90).
  25. Connect Seven segment display 2 to Pin-14 (Output) of ICBase-1 (74LS90).
  26. Connect Seven segment display 2 to Pin-15 (Output) of ICBase-1 (74LS90).
  27. Connect Seven segment display 2 to Pin-18 (Output) of ICBase-1 (74LS90).
  28. Connect Pin-17 (Output) of ICBase-2 (74LS08) to Seven segment display 1.
  29. Connect Seven segment display 1 to Pin-14 (Output) of ICBase-2 (74LS08).