I am trying to build a counter using JK flip flop, and ideally I want to use only 7400, 7408 and 7404 ICs, and a button instead of clock.
what I Did first was simulate the whole thing in logism, used the jk-flipflop(block diagram), and it worked.
here is the schematic: http://i.imgur.com/4qEggqo.png
Right after that, i replaced all of the jk-flipflop(block diagram) with its schematic equivalent and it did not work.
here is the schematic: http://i.imgur.com/lLAcFvh.png
should i use different schematic for the jk flip flop?
what I Did first was simulate the whole thing in logism, used the jk-flipflop(block diagram), and it worked.
here is the schematic: http://i.imgur.com/4qEggqo.png
Right after that, i replaced all of the jk-flipflop(block diagram) with its schematic equivalent and it did not work.
here is the schematic: http://i.imgur.com/lLAcFvh.png
should i use different schematic for the jk flip flop?