Full Adder Using Decoder 74138

Ashutosh
Ashutosh Morr
• Created on Dec 27, 2024 • 1 • 0 • 3
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Full Adder Using Decoder 74138
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Integrated Circuits Used

74LS138 74LS00 74LS32

Description

Take nand of m1,m2 and m4, m7 then output of nand is connected to OR gate and from it connect it to output panel which sum Ans similary take nand of m3, m5 and m6, m7 then output of both nand is goes to OR and Then to output panel,which is carry

Procedure

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