Mod 42 counter - Copy

Ishwari Anchawale
Ishwari Anchawale
• Created on Apr 21, 2026 • 0 • 0 • 2
Edit Circuit Copy Circuit Try Yourself
Mod 42 counter - Copy
100%

Integrated Circuits Used

74LS90 74LS08

Procedure

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