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• Created on Apr 21, 2026 • 0 • 0 • 2
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Integrated Circuits Used

74HC191 74LS138

Procedure

  1. Add IC 74HC191 into ICBase-2 (74HC191).
  2. Add IC 74LS138 into ICBase-3 (74LS138).
  3. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74HC191).
  4. Connect GND Port to Pin-8 (Ground) of ICBase-2 (74HC191).
  5. Connect Clock port of 1Hz frequency to Pin-18 (Input) of ICBase-2 (74HC191).
  6. Connect GND Port to Pin-5 (Input) of ICBase-2 (74HC191).
  7. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS138).
  8. Connect GND Port to Pin-8 (Ground) of ICBase-3 (74LS138).
  9. Connect GND Port to Pin-4 (Input) of ICBase-2 (74HC191).
  10. Connect VCC Port to Pin-15 (Input) of ICBase-2 (74HC191).
  11. Connect Output-1 to Pin-7 (Output) of ICBase-2 (74HC191).
  12. Connect Pin-1 (Input) of ICBase-3 (74LS138) to Pin-3 (Output) of ICBase-2 (74HC191).
  13. Connect Pin-2 (Input) of ICBase-3 (74LS138) to Pin-2 (Output) of ICBase-2 (74HC191).
  14. Connect Pin-3 (Input) of ICBase-3 (74LS138) to Pin-6 (Output) of ICBase-2 (74HC191).
  15. Connect VCC Port to Pin-6 (Input) of ICBase-3 (74LS138).
  16. Connect GND Port to Pin-4 (Input) of ICBase-3 (74LS138).
  17. Connect GND Port to Pin-5 (Input) of ICBase-3 (74LS138).
  18. Connect Output-11 to Pin-19 (Output) of ICBase-3 (74LS138).
  19. Connect Output-10 to Pin-18 (Output) of ICBase-3 (74LS138).
  20. Connect Output-9 to Pin-17 (Output) of ICBase-3 (74LS138).
  21. Connect Output-8 to Pin-16 (Output) of ICBase-3 (74LS138).
  22. Connect Output-7 to Pin-15 (Output) of ICBase-3 (74LS138).
  23. Connect Output-6 to Pin-14 (Output) of ICBase-3 (74LS138).
  24. Connect Output-5 to Pin-13 (Output) of ICBase-3 (74LS138).
  25. Connect Output-4 to Pin-7 (Output) of ICBase-3 (74LS138).
  26. Connect Pin-4 (Input) of ICBase-2 (74HC191) to Pin-7 (Output) of ICBase-2 (74HC191).