Full Adder using decoder

Atharva
Atharva Gangshettiwar
• Created on Sep 21, 2021 • 0 • 0 • 2
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Full Adder using decoder
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Integrated Circuits Used

74LS138 74LS20

Procedure

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