Full Subtractor

Prathamesh
Prathamesh Jadhav
• Created on Sep 8, 2021 • 0 • 0 • 2
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Full Subtractor
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Integrated Circuits Used

74LS138 74LS20

Description

When A=0,B=1,Bin=1 then Diff=1 and C=0

Procedure

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