4 bit down counter using ic74ls191

Prasad
Prasad Shinde
• Created on Dec 18, 2024 • 0 • 0 • 1
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4 bit down counter using ic74ls191
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Integrated Circuits Used

74HC191

Description

4 bit down counter using ic74ls191 . make pin no. 5 vcc to enable down counting. and make pl vcc to disable the parallel loading

Procedure

  1. Add IC 74HC191 into ICBase-3 (74HC191).
  2. Connect Input-0 to Pin-19 (Input) of ICBase-3 (74HC191).
  3. Connect Input-1 to Pin-1 (Input) of ICBase-3 (74HC191).
  4. Connect Input-2 to Pin-14 (Input) of ICBase-3 (74HC191).
  5. Connect Input-3 to Pin-13 (Input) of ICBase-3 (74HC191).
  6. Connect GND Port to Pin-8 (Ground) of ICBase-3 (74HC191).
  7. Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74HC191).
  8. Connect Output-0 to Pin-3 (Output) of ICBase-3 (74HC191).
  9. Connect Output-1 to Pin-2 (Output) of ICBase-3 (74HC191).
  10. Connect Output-2 to Pin-6 (Output) of ICBase-3 (74HC191).
  11. Connect Output-3 to Pin-7 (Output) of ICBase-3 (74HC191).
  12. Connect GND Port to Pin-4 (Input) of ICBase-3 (74HC191).
  13. Connect VCC Port to Pin-5 (Input) of ICBase-3 (74HC191).
  14. Connect Pin-18 (Input) of ICBase-3 (74HC191) to Manual clock Port.
  15. Connect VCC Port to Pin-15 (Input) of ICBase-3 (74HC191).
  16. Connect Manual clock Port to ICBase-3 (74HC191).