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What about adding a buzzer component for acoustical feedback as an alternative to the LED?

Greetings
Dietrich

Thank you very much!
Your hint works perfectly.

Dietrich

Hi,

I am new here and try using the LogicCircuit program.
One of my problems:
In many cases when I want to draw a wire to an existing wire, the connection point is missing on the "T"-shaped connection.
In some other cases LogicCircuit sets the point automatically.
No combination of mouse click and ...