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Tanish
Tanish Charthankar
• Created on Dec 14, 2023 • 0 • 0 • 3
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FULL subtractor
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Integrated Circuits Used

74LS138 74LS00 74LS32

Description

In this use the 1247 for differennce and use the Two Nand gates and give their outputs to or gate and then use it similar for the 1237 for carry.Always remember that lsb is A and rather than A put always on MSB

Procedure

  1. Add IC 74LS138 into ICBase-1 (74LS138).
  2. Add IC 74LS00 into ICBase-2 (74LS00).
  3. Add IC 74LS32 into ICBase-3 (74LS32).
  4. Connect GND Port to Pin-4 (Input) of ICBase-1 (74LS138).
  5. Connect Pin-5 (Input) of ICBase-1 (74LS138) to GND Port.
  6. Connect VCC Port to Pin-6 (Input) of ICBase-1 (74LS138).
  7. Connect GND Port to Pin-8 (Ground) of ICBase-1 (74LS138).
  8. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS138).
  9. Connect Pin-1 (Input) of ICBase-2 (74LS00) to Pin-18 (Output) of ICBase-1 (74LS138).
  10. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS00).
  11. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS00).
  12. Connect Pin-17 (Output) of ICBase-1 (74LS138) to Pin-2 (Input) of ICBase-2 (74LS00).
  13. Connect Pin-4 (Input) of ICBase-2 (74LS00) to Pin-15 (Output) of ICBase-1 (74LS138).
  14. Connect Pin-5 (Input) of ICBase-2 (74LS00) to Pin-7 (Output) of ICBase-1 (74LS138).
  15. Connect Pin-1 (Input) of ICBase-3 (74LS32) to Pin-3 (Output) of ICBase-2 (74LS00).
  16. Connect Pin-2 (Input) of ICBase-3 (74LS32) to Pin-6 (Output) of ICBase-2 (74LS00).
  17. Connect GND Port to Pin-7 (Ground) of ICBase-3 (74LS32).
  18. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS32).
  19. Connect Pin-19 (Input) of ICBase-2 (74LS00) to Pin-18 (Output) of ICBase-1 (74LS138).
  20. Connect Pin-17 (Output) of ICBase-1 (74LS138) to Pin-18 (Input) of ICBase-2 (74LS00).
  21. Connect Pin-16 (Input) of ICBase-2 (74LS00) to Pin-16 (Output) of ICBase-1 (74LS138).
  22. Connect Pin-15 (Input) of ICBase-2 (74LS00) to Pin-7 (Output) of ICBase-1 (74LS138).
  23. Connect Pin-4 (Input) of ICBase-3 (74LS32) to Pin-17 (Output) of ICBase-2 (74LS00).
  24. Connect Pin-5 (Input) of ICBase-3 (74LS32) to Pin-14 (Output) of ICBase-2 (74LS00).
  25. Connect Input-0 to Pin-1 (Input) of ICBase-1 (74LS138).
  26. Connect Input-1 to Pin-2 (Input) of ICBase-1 (74LS138).
  27. Connect Pin-3 (Input) of ICBase-1 (74LS138) to Input-2.
  28. Connect Seven segment display 2 to Pin-3 (Output) of ICBase-3 (74LS32).
  29. Connect Seven segment display 1 to Pin-6 (Output) of ICBase-3 (74LS32).
  30. Connect VCC Port to ICBase-2 (74LS00).
  31. Connect Pin-2 (Input) of ICBase-2 (74LS00) to ICBase-1 (74LS138).