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kanak naidu
kanak naidu
• Created on Apr 22, 2026 • 0 • 0 • 2
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Integrated Circuits Used

74LS90 74LS138

Procedure

  1. Add IC 74LS90 into ICBase-1 (74LS90).
  2. Connect GND Port to Pin-2 (Input) of ICBase-1 (74LS90).
  3. Connect GND Port to Pin-3 (Input) of ICBase-1 (74LS90).
  4. Connect GND Port to Pin-6 (Input) of ICBase-1 (74LS90).
  5. Connect GND Port to Pin-7 (Input) of ICBase-1 (74LS90).
  6. Connect Clock port of 1Hz frequency to Pin-1 (Input) of ICBase-1 (74LS90).
  7. Add IC 74LS138 into ICBase-2 (74LS138).
  8. Connect Pin-1 (Input) of ICBase-2 (74LS138) to Pin-19 (Input & Output) of ICBase-1 (74LS90).
  9. Connect Pin-2 (Input) of ICBase-2 (74LS138) to Pin-18 (Output) of ICBase-1 (74LS90).
  10. Connect Pin-3 (Input) of ICBase-2 (74LS138) to Pin-17 (Output) of ICBase-1 (74LS90).
  11. Connect VCC Port to Pin-4 (Input) of ICBase-2 (74LS138).
  12. Connect GND Port to Pin-5 (Input) of ICBase-2 (74LS138).
  13. Connect GND Port to Pin-6 (Input) of ICBase-2 (74LS138).
  14. Connect Output-0 to Pin-7 (Output) of ICBase-2 (74LS138).
  15. Connect Output-1 to Pin-8 (Ground) of ICBase-2 (74LS138).
  16. Connect Output-2 to Pin-13 (Output) of ICBase-2 (74LS138).