4 bit parallel adder / subtractor

Shivu
Shivu Kumar
• Created on Feb 8, 2024 • 0 • 0 • 2
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4 bit parallel adder / subtractor
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Integrated Circuits Used

74LS83 74LS86

Description

if c in =0 the adder, if c in =1 then subtractor

Procedure

  1. Add IC 74LS83 into ICBase-1 (74LS83).
  2. Add IC 74LS86 into ICBase-2 (74LS86).
  3. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74LS86).
  4. Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS86).
  5. Connect VCC Port to Pin-5 (VCC) of ICBase-1 (74LS83).
  6. Connect GND Port to Pin-16 (Ground) of ICBase-1 (74LS83).
  7. Connect Input-15 to Pin-1 (Input) of ICBase-1 (74LS83).
  8. Connect Input-14 to Pin-3 (Input) of ICBase-1 (74LS83).
  9. Connect Input-13 to Pin-8 (Input) of ICBase-1 (74LS83).
  10. Connect Input-12 to Pin-14 (Input) of ICBase-1 (74LS83).
  11. Connect Pin-1 (Input) of ICBase-2 (74LS86) to Input-9.
  12. Connect Pin-4 (Input) of ICBase-2 (74LS86) to Input-8.
  13. Connect Pin-19 (Input) of ICBase-2 (74LS86) to Input-7.
  14. Connect Pin-16 (Input) of ICBase-2 (74LS86) to Input-6.
  15. Connect Pin-2 (Input) of ICBase-2 (74LS86) to Input-3.
  16. Connect Pin-5 (Input) of ICBase-2 (74LS86) to Input-3.
  17. Connect Pin-18 (Input) of ICBase-2 (74LS86) to Input-3.
  18. Connect Pin-15 (Input) of ICBase-2 (74LS86) to Input-3.
  19. Connect Pin-20 (Input) of ICBase-1 (74LS83) to Pin-3 (Output) of ICBase-2 (74LS86).
  20. Connect Pin-4 (Input) of ICBase-1 (74LS83) to Pin-6 (Output) of ICBase-2 (74LS86).
  21. Connect Pin-7 (Input) of ICBase-1 (74LS83) to Pin-17 (Output) of ICBase-2 (74LS86).
  22. Connect Pin-15 (Input) of ICBase-1 (74LS83) to Pin-14 (Output) of ICBase-2 (74LS86).
  23. Connect Output-12 to Pin-19 (Output) of ICBase-1 (74LS83).
  24. Connect Pin-17 (Input) of ICBase-1 (74LS83) to Input-3.
  25. Connect Output-5 to Pin-18 (Output) of ICBase-1 (74LS83).
  26. Connect Output-11 to Pin-2 (Output) of ICBase-1 (74LS83).
  27. Connect Output-10 to Pin-6 (Output) of ICBase-1 (74LS83).
  28. Connect Output-9 to Pin-13 (Output) of ICBase-1 (74LS83).