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January 25, 2018 - Master Slave J-K Flip Flop for IO

A project log for The Cardboard Computer - IO is my name

My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This is an educational platform for me.

dr-cockroachDr. Cockroach 01/25/2018 at 13:450 Comments

Got a bit distracted with the IO project ( Now how can that happen ) and decided to wire up a new ( for me ) flip flop circuit. Yann has wanted me to ditch the 555 as a clock and the pulser circuit from the start and now is the time :-)

By using a master slave flip flop I can get rid of the pulser and replace the master NOR flip flop with a Nand logic master slave. This is also the start for building a 4017 Johnson Counter using this master slave :-)

And here is a video of the new flip flop in action  as well as using the new clock circuit.    

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