7 Full adder using decoder

Mayank.
Mayank. Joshi
• Created on Oct 11, 2021 • 0 • 0 • 2
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7 Full adder using decoder
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Integrated Circuits Used

74LS138 74LS20

Procedure

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