CINEMA COUNTER SEATS

arul mittal
arul mittal
• Created on Apr 22, 2026 • 15 • 9 • 3
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CINEMA COUNTER SEATS
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Integrated Circuits Used

74LS76 74LS20 74LS04

Description

the led glows when no seats left

Procedure

  1. Add IC 74LS76 into ICBase-2 (74LS76).
  2. Add IC 74LS76 into ICBase-3 (74LS76).
  3. Connect VCC Port to Pin-5 (VCC) of ICBase-2 (74LS76).
  4. Connect VCC Port to Pin-5 (VCC) of ICBase-3 (74LS76).
  5. Connect GND Port to Pin-17 (Ground) of ICBase-2 (74LS76).
  6. Connect GND Port to Pin-17 (Ground) of ICBase-3 (74LS76).
  7. Connect VCC Port to Pin-4 (Input) of ICBase-2 (74LS76).
  8. Connect VCC Port to Pin-20 (Input) of ICBase-2 (74LS76).
  9. Connect Manual clock Port to Pin-1 (Input) of ICBase-2 (74LS76).
  10. Connect Pin-18 (Output) of ICBase-2 (74LS76) to Pin-6 (Input) of ICBase-2 (74LS76).
  11. Connect VCC Port to Pin-13 (Input) of ICBase-2 (74LS76).
  12. Connect VCC Port to Pin-16 (Input) of ICBase-2 (74LS76).
  13. Connect Pin-1 (Input) of ICBase-3 (74LS76) to Pin-14 (Output) of ICBase-2 (74LS76).
  14. Connect VCC Port to Pin-4 (Input) of ICBase-3 (74LS76).
  15. Connect VCC Port to Pin-20 (Input) of ICBase-3 (74LS76).
  16. Connect Pin-18 (Output) of ICBase-3 (74LS76) to Pin-6 (Input) of ICBase-3 (74LS76).
  17. Connect VCC Port to Pin-13 (Input) of ICBase-3 (74LS76).
  18. Connect VCC Port to Pin-16 (Input) of ICBase-3 (74LS76).
  19. Add IC 74LS20 into ICBase-4 (74LS20).
  20. Connect GND Port to Pin-7 (Ground) of ICBase-4 (74LS20).
  21. Connect Pin-1 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-2 (74LS76).
  22. Connect Pin-2 (Input) of ICBase-4 (74LS20) to Pin-18 (Output) of ICBase-2 (74LS76).
  23. Connect Pin-4 (Input) of ICBase-4 (74LS20) to Pin-14 (Output) of ICBase-3 (74LS76).
  24. Connect Pin-5 (Input) of ICBase-4 (74LS20) to Pin-18 (Output) of ICBase-3 (74LS76).
  25. Connect VCC Port to Pin-20 (VCC) of ICBase-4 (74LS20).
  26. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS04).
  27. Connect GND Port to Pin-7 (Ground) of ICBase-1 (74LS04).
  28. Connect Pin-6 (Output) of ICBase-4 (74LS20) to Pin-1 (Input) of ICBase-1 (74LS04).
  29. Connect Output-15 to Pin-2 (Output) of ICBase-1 (74LS04).
  30. Add IC 74LS04 into ICBase-1 (74LS04).
  31. Connect VCC Port to Pin-3 (Input) of ICBase-3 (74LS76).
  32. Connect VCC Port to Pin-3 (Input) of ICBase-2 (74LS76).
  33. Connect VCC Port to Pin-7 (Input) of ICBase-3 (74LS76).
  34. Connect Input-10 to Pin-2 (Input) of ICBase-2 (74LS76).
  35. Connect Input-10 to Pin-8 (Input) of ICBase-2 (74LS76).
  36. Connect Input-10 to Pin-2 (Input) of ICBase-3 (74LS76).
  37. Connect Input-10 to Pin-7 (Input) of ICBase-3 (74LS76).
  38. Connect VCC Port to Pin-7 (Input) of ICBase-2 (74LS76).
  39. Connect VCC Port to Pin-8 (Input) of ICBase-3 (74LS76).
  40. Connect Output-3 to Pin-19 (Output) of ICBase-2 (74LS76).
  41. Connect Output-4 to Pin-15 (Output) of ICBase-2 (74LS76).
  42. Connect Output-5 to Pin-19 (Output) of ICBase-3 (74LS76).
  43. Connect Output-6 to Pin-15 (Output) of ICBase-3 (74LS76).
  44. Connect Seven segment display 1 to Pin-19 (Output) of ICBase-2 (74LS76).
  45. Connect Seven segment display 1 to Pin-15 (Output) of ICBase-2 (74LS76).
  46. Connect Seven segment display 1 to Pin-19 (Output) of ICBase-3 (74LS76).
  47. Connect Seven segment display 1 to Pin-15 (Output) of ICBase-3 (74LS76).