Full adder by decoder

Hussain
Hussain Rangwala
• Created on Aug 19, 2021 • 0 • 0 • 2
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Full adder by decoder
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Integrated Circuits Used

74LS20 74LS138

Procedure

  1. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS138).
  2. Connect GND Port to Pin-8 (Ground) of ICBase-3 (74LS138).
  3. Connect Input-2 to Pin-3 (Input) of ICBase-3 (74LS138).
  4. Connect Input-1 to Pin-2 (Input) of ICBase-3 (74LS138).
  5. Connect Input-0 to Pin-1 (Input) of ICBase-3 (74LS138).
  6. Connect VCC Port to Pin-6 (Input) of ICBase-3 (74LS138).
  7. Connect GND Port to Pin-5 (Input) of ICBase-3 (74LS138).
  8. Connect GND Port to Pin-4 (Input) of ICBase-3 (74LS138).
  9. Connect VCC Port to Pin-20 (VCC) of ICBase-5 (74LS20).
  10. Connect GND Port to Pin-7 (Ground) of ICBase-5 (74LS20).
  11. Connect Pin-1 (Input) of ICBase-5 (74LS20) to Pin-7 (Output) of ICBase-3 (74LS138).
  12. Connect Pin-2 (Input) of ICBase-5 (74LS20) to Pin-13 (Output) of ICBase-3 (74LS138).
  13. Connect Pin-3 (Input & Output) of ICBase-5 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  14. Connect Pin-4 (Input) of ICBase-5 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  15. Connect Pin-15 (Output) of ICBase-3 (74LS138) to Pin-5 (Input) of ICBase-5 (74LS20).
  16. Connect Output-15 to Pin-6 (Output) of ICBase-5 (74LS20).
  17. Connect Output-13 to Pin-14 (Output) of ICBase-5 (74LS20).
  18. Connect Pin-18 (Output) of ICBase-3 (74LS138) to Pin-2 (Input) of ICBase-5 (74LS20).
  19. Connect Pin-3 (Input & Output) of ICBase-5 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS138).
  20. Connect Pin-19 (Input) of ICBase-5 (74LS20) to Pin-7 (Output) of ICBase-3 (74LS138).
  21. Connect Pin-18 (Input) of ICBase-5 (74LS20) to Pin-13 (Output) of ICBase-3 (74LS138).
  22. Connect Pin-16 (Input) of ICBase-5 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS138).
  23. Connect Pin-15 (Input) of ICBase-5 (74LS20) to Pin-16 (Output) of ICBase-3 (74LS138).
  24. Connect Pin-4 (Input) of ICBase-5 (74LS20) to Pin-17 (Output) of ICBase-3 (74LS138).
  25. Add IC 74LS20 into ICBase-5 (74LS20).
  26. Add IC 74LS138 into ICBase-3 (74LS138).