3x8 Decoder using Logic gates

Swapnaja
Swapnaja Yadav
• Created on Aug 29, 2025 • 0 • 0 • 2
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3x8 Decoder using Logic gates
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Integrated Circuits Used

74LS21 74LS04

Procedure

  1. Add IC 74LS21 into ICBase-2 (74LS21).
  2. Add IC 74LS21 into ICBase-3 (74LS21).
  3. Add IC 74LS21 into ICBase-4 (74LS21).
  4. Add IC 74LS04 into ICBase-1 (74LS04).
  5. Add IC 74LS21 into ICBase-5 (74LS21).
  6. Connect Input-0 to Pin-1 (Input) of ICBase-2 (74LS21).
  7. Connect Input-0 to Pin-1 (Input) of ICBase-3 (74LS21).
  8. Connect Input-0 to Pin-1 (Input) of ICBase-4 (74LS21).
  9. Connect Input-0 to Pin-1 (Input) of ICBase-5 (74LS21).
  10. Connect Input-15 to Pin-2 (Input) of ICBase-2 (74LS21).
  11. Connect Input-14 to Pin-4 (Input) of ICBase-2 (74LS21).