Analogies: registers remember. combinational logic has no memory.

Ah ha!  The register transfer level – I was looking for you.

Analogies:
registers remember.
combinational logic has no memory.

“A synchronous circuit consists of two kinds of elements: registers and combinational logic. Registers (usually implemented as D flip-flops) synchronize the circuit’s operation to the edges of the clock signal, and are the only elements in the circuit that have memory properties.”

And after researching flip-flop, I came across this marvelous article. which contains an interesting fact about how some #humans  devotion to #purelogic flies in the face of #reality  :

“Serious computer and digital hardware bugs caused by metastability have a fascinating social history. Many engineers have refused to believe that a bistable device can enter into a state that is neither true nor false and has a positive probability that it will remain indefinite for any given period of time, ”

https://en.wikipedia.org/wiki/Metastability_in_electronics

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