[userbinator]

However you can simply use a d-flipflop to do what you need.

The point of my exercise was to test a basic functionality. If you cannot simulate that, the feedback loops which arise naturally in more complex circuit designs won't work either. It's like the "fizzbuzz" of logic simulation.

[bjackman]

If you have a flip-flop atom then you can do some meaningful stuff; IIRC the gate-level circuit simulator that the Nand To Tetris course uses can't handle this stuff, and you can still build a CPU. I guess it just depends at what level you want to think about the circuit.

Edit: maybe it should be called a "logic circuit" instead of a "digital circuit".

[satu0king]

Edit: maybe it should be called a "logic circuit" instead of a "digital circuit".

I will take this advice and discuss with my mentors, Thank you :)

[ansible]

Yeah, I saw 'timing' mentioned, and also tried to create a flip-flop for yucks.