Full Subtractor using Decoder

Mitansh
Mitansh Dekate
• Created on Apr 9, 2025 • 0 • 0 • 3
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Full Subtractor using Decoder
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Integrated Circuits Used

74LS138 74LS04 74LS20

Procedure

  1. Add IC 74LS138 into ICBase-2 (74LS138).
  2. Add IC 74LS04 into ICBase-3 (74LS04).
  3. Connect Pin-1 (Input) of ICBase-2 (74LS138) to Input-11.
  4. Connect Pin-2 (Input) of ICBase-2 (74LS138) to Input-10.
  5. Connect Pin-3 (Input) of ICBase-2 (74LS138) to Input-9.
  6. Connect Pin-1 (Input) of ICBase-3 (74LS04) to Pin-18 (Output) of ICBase-2 (74LS138).
  7. Connect Pin-3 (Input) of ICBase-3 (74LS04) to Pin-17 (Output) of ICBase-2 (74LS138).
  8. Connect Pin-5 (Input) of ICBase-3 (74LS04) to Pin-15 (Output) of ICBase-2 (74LS138).
  9. Connect Pin-7 (Output) of ICBase-2 (74LS138) to Pin-15 (Input) of ICBase-3 (74LS04).
  10. Add IC 74LS20 into ICBase-4 (74LS20).
  11. Connect Pin-1 (Input) of ICBase-4 (74LS20) to Pin-2 (Output) of ICBase-3 (74LS04).
  12. Connect Pin-2 (Input) of ICBase-4 (74LS20) to Pin-4 (Output) of ICBase-3 (74LS04).
  13. Connect Pin-5 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS04).
  14. Connect Pin-4 (Input) of ICBase-4 (74LS20) to Pin-6 (Output) of ICBase-3 (74LS04).
  15. Connect Output-6 to Pin-6 (Output) of ICBase-4 (74LS20).
  16. Connect Pin-15 (Input) of ICBase-4 (74LS20) to Pin-2 (Output) of ICBase-3 (74LS04).
  17. Connect Pin-16 (Input) of ICBase-4 (74LS20) to Pin-4 (Output) of ICBase-3 (74LS04).
  18. Connect Pin-17 (Input) of ICBase-3 (74LS04) to Pin-16 (Output) of ICBase-2 (74LS138).
  19. Connect Pin-18 (Input) of ICBase-4 (74LS20) to Pin-16 (Output) of ICBase-3 (74LS04).
  20. Connect Pin-19 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS04).
  21. Connect Output-5 to Pin-14 (Output) of ICBase-4 (74LS20).
  22. Connect GND Port to Pin-7 (Ground) of ICBase-4 (74LS20).
  23. Connect VCC Port to Pin-20 (VCC) of ICBase-4 (74LS20).
  24. Connect GND Port to Pin-7 (Ground) of ICBase-3 (74LS04).
  25. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS04).
  26. Connect GND Port to Pin-8 (Ground) of ICBase-2 (74LS138).
  27. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS138).
  28. Connect Pin-1 (Input) of ICBase-4 (74LS20) to ICBase-3 (74LS04).