Johnson Counter

Jyothsna
Jyothsna N
• Created on Feb 10, 2021 • 0 • 0 • 2
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Johnson Counter
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Integrated Circuits Used

74HC194 74LS04

Description

Pin no. 2 at Input is MODE. At Input section Pin no. 10=A,9=B,8=C,7=D. At output section Pin no. 3=Qd, 4=Qc, 5=Qb, 6=Qa. Mode=OFF throughout the circuit Turn a=1,b=0,c=0,d=0. Then don't change anythingand keep generating pulse. The output lights goes from 1 light ON & 2 lights ON & 3 lights ON & 4lights ON & back to all lights OFF & repeats as a loop.

Procedure

  1. Add IC 74HC194 into ICBase-2 (74HC194).
  2. Add IC 74LS04 into ICBase-1 (74LS04).
  3. Connect VCC Port to Pin-1 (Input) of ICBase-2 (74HC194).
  4. Connect VCC Port to Pin-20 (VCC) of ICBase-2 (74HC194).
  5. Connect VCC Port to Pin-13 (Input) of ICBase-2 (74HC194).
  6. Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS04).
  7. Connect GND Port to Pin-8 (Ground) of ICBase-2 (74HC194).
  8. Connect GND Port to Pin-7 (Ground) of ICBase-1 (74LS04).
  9. Connect Input-10 to Pin-3 (Input) of ICBase-2 (74HC194).
  10. Connect Input-9 to Pin-4 (Input) of ICBase-2 (74HC194).
  11. Connect Input-8 to Pin-5 (Input) of ICBase-2 (74HC194).
  12. Connect Input-7 to Pin-6 (Input) of ICBase-2 (74HC194).
  13. Connect Input-2 to Pin-14 (Input) of ICBase-2 (74HC194).
  14. Connect Manual clock Port to Pin-15 (Input) of ICBase-2 (74HC194).
  15. Connect Output-2 to Pin-16 (Output) of ICBase-2 (74HC194).
  16. Connect Output-3 to Pin-17 (Output) of ICBase-2 (74HC194).
  17. Connect Output-4 to Pin-18 (Output) of ICBase-2 (74HC194).
  18. Connect Output-5 to Pin-19 (Output) of ICBase-2 (74HC194).
  19. Connect Pin-16 (Output) of ICBase-2 (74HC194) to Pin-1 (Input) of ICBase-1 (74LS04).
  20. Connect Pin-2 (Input) of ICBase-2 (74HC194) to Pin-2 (Output) of ICBase-1 (74LS04).