You will need the next elements:

  • J-K Flip-Flop
  • 7448 Decoder BCD to 7 segments
  • NAND gate
  • Protoboard
  • 7 segments display
  • Wire


True table of JK Flip-Flop

 

True table of display

 


True table of J-K flip-flop

 

True table of NAND gate

 

Flip-flop chronogram

 

 


Protoboard circuit

 

 

 

Circuit schema